问题

Competitors are allowed to take a five-minute breakevery hour to eat，drink or do ________ is necessary

A:which
B:that
C:where
D:what

正确答案是：

同类题型

Yang yan, are you coming with us? —I’d love to, but something unexpected ______

But for your timely warning, we ______ into great trouble.–You know we’re friends.

______ all the pockets but I couldn’t find the ticket.[ ]

nds little time on English, but , he has passed the important examination.

My hair is shorter than .