We are very annoyed ______ his mistake, because we have emphasized this for several times

_____ you have worked out the first problem, you may go on to work on the second

These shoes look very good. I wonder _______. （2006年上海春季高考题）

o help creativity grow, we must firstmake sure we can ______ways and ideas different from our own.

When she was in trouble, I did what I could to help her.my help, she wrote me a letter of thanks.