Scientists are trying to ways to treat the terrible disease called H7N9.

sor Zhang handed out the textbooks toall the students,except who had alreadytaken them.

It’s high time he _________ the right measures; otherwise, he’ll fail.

Mr. Smith has ___collection of coins than anyone else I have ever met.[ ]

Liu Jing， did your parents give you on your birthday–Yes.They bought me a new bicycle.