Do you have enough students to clean the laboratory? –No, I think we need____________ students.

What did you do yesterday?—My brother took two friends of ________ to play chess with us. But I don’t’ know _______ of them.

I don’t think he could have done such a stupid thing last night, _____?

Can you help me _________ this cat? I go to my grandparents’ home this afternoon.—OK.

Did you enjoy your trip ______ Disneyland?[ ]