Four students in Qingdao stood in line against a man to save a woman teacher at the school gate.— _________ great courage they had!

All the clerks went home _________ Mr. Yang，for he had to finish his work.

The reportindicates that the new power station produces energyas the one built earlier

you ever to Shanghai —-Yes. I went there last month .

I won’t tell the student the answer to the math problem until he______ on it for more than an hour.