问题

We_______onthis project for four hours Let’s have a rest
A:where
B:what
C:whether
D:which
B:what
C:whether
D:which
正确答案是:
同类题型
Susan has ________ classes today, and the ________ class is English.
I have _____ more books than you.
We have _______ books in our library
nd out of breath, we reached the top ofthe mountain and stopped _____ the beautiful scenery.
His endless talk made us ________.— Yes. The talk itself is really _________.