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Up to the present time oceanographers _____lots of seafloor mountains they _____existed.

Up to the present time oceanographers _____lots of seafloor mountains they _____existed. Correct Answer have found/haven't know

বাক্যটির up to the present time অংশটি দ্বারা present tense - কে নির্দেশ করে। সুতরাং বাক্যটি present tense এর structure follow করবে। তাই শূন্যস্থানে have found এবং haven't known বসালে বাক্যটি যথাযথ হবে।

Related Questions

Consider the following pairs Mountain Types - Mountains 1. Fold Mountains- Alps 2. Residual Mountains-Vosges 3. Block Mountains-Ural 4. Volcanic Mountains-Mt.Kilimanjaro Which of the pairs given above is/are correctly matched?
Given below are quantities named A,B and C. Based on the given information, you have to determine the relation between the quantities. You should use the given data and your knowledge of mathematics to choose among the possible answer. Akash’s present age is six years less than Badshah’s age after nine years. The ratio of present age of Badshahand RAFTAAR is 5:9. Raftaar is 21 years younger than Denny and Denny is three years older than Honey. Square of the Honey’s present age is 1350 more than 15 times of Honey’s present age? Quantity A: What is the difference between AKASH’s present age and HONEY’s age after 16 years? Quantity B: After 6 years Mankirat’s age is twice that of Akash’s present age. Diljeet’s present age is 3.5 times of 25% of sum of present age of Mankirat and A. What is the present age of Diljeet? Quantity C: Twice of A’s present age is eight years more than that of Babbu’spresent age, then find the Babbu’s present age?
Read the given statements and conclusions carefully. Assuming that the Two statements are given followed by three conclusions numbered I, II and III. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: 1. All tanks are rivers. 2. All rivers are mountains. Conclusions: I. Some mountains are rivers. II. Some tanks are not mountains. III. Some mountains are tanks.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All stools are round. Some mountains are round. Some ponds are mountains. All ponds are square. Conclusions: I. Some ponds are round. II. Some mountains are square. III. Some ponds are both mountains and round. IV. Some stools are square.
Some mountains are hillocks. Some mountains are rivers. Some mountains are valleys. Conclusions: 1. All mountains are either hillocks or rivers or valleys 2. No valley is river 3. Some river are valleys
Statements : Some mountains are hillocks. Some mountains are rivers. Some mountains are valleys.

Conclusions :
I. All mountains are either hillocks or rivers or valleys.
II. No valley is river.
III. Some river are valleys.
Which of the following statement is/are correct? The Tien Shan extends to the north west and reaches the Amur River under the name of Great Khingan Mountains. Hindukush Mountains running westwards from the Pamir Knot to the Elburz Mountains in Iran. Sulaiman Range proceeds southwards from Pamir Knot along the border between Pakistan and Afghanistan. Select the correct code from below.
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All snakes are trees. Some trees are roads. All roads are mountains. Conclusions: 1. Some mountains are snakes 2. Some roads are snakes 3. Some mountains are trees
Statements : All snakes are trees. Some trees are roads. All roads are mountains.

Conclusions :
I. Some mountains are snakes.
II. Some roads are snakes.
III. Some mountains are trees.