You should be _______ careful when you take the chemistry exam.—I agree. In this way, I will make _______ mistakes.

My iphone 5 needs to be repaired. How much do you think it _____?

What’s this ______ English? — It’s a kite. [ ]

He is very ________today. Look, he is laughing _________.

Since there are other applicants, we can’t let you know our decision _____ all of them have got their chances for interview.