"The structure has become weakened. It has, therefore, to be . . ." Do I need a comma before and after "therefore," or just after?

It's really up to you, but books like "Diary of a Wimpy Kid" and "Dork Diaries" have lots of small problems that build up into a larger one. If you...

First off, you should just be able to "come out" to your friends yet again. That'd be step one, and probably the most difficult of them all. The problem with...

Use Bixby if it is set up, while saying "Turn off my phone." If it is an older phone use S Voice.

Your sentence is already punctuated correctly. Here, you're using "therefore" as an adverb, so there's no need to use any punctuation at all.

As is, you need a comma after "therefore" since it is an introductory phrase. But ask yourself which statement you're making is the cause and which is the effect. It...

Knit the next row straight across if that is what your instructions say. If you end up with too many stitches, you may accidentally be doing a yarn over in...

If you use a permanent dye, it should last roughly 6 weeks. Touching it up is the best option, but it will further damage your hair.

Although she clearly did nothing to earn your business, she did not seem to violate any laws or regulations. If you want to warn others of her antics, you best...

Yes, but you may want to consider adding water as well, so the mangoes don't get dehydrated.

You could do that, but some players don't play with cheats and would rather find a way out that doesn't involve cheating. It can sometimes be more enjoyable trying to...