问题

I find _______ necessary to take some warm and dry clothes with us during the walk.
A:it
B:which
C:that
D:What
B:which
C:that
D:What
正确答案是:
同类题型
Mrs. Green is out. I have to ___________ her baby.
Could you tell me ______ it takes to go from here to Beijing by air? – About 50 minutes.[ ]
Nowhere else, as his mother told us, __________ except the cabin in the backyard.
Do you know_______ this dictionary belongs to? -Let me see. Oh, it’s_______.