问题

If your house catches fire, you should call _____________ for help.

A:swimming
B:swims
C:to swim
D:to swimming;

正确答案是：

同类题型

I failed again I wish I _________ harder—Butyou _________

Some students have eggs and apples ______ breakfast.

What are you going to do with so many vegetables?—Well, ______ allow them to go bad, I will sell them at half price.[ ]

Here are Daphne and David; _____ is my brother.[ ]

What do you and your cousin ______—I______ a baseball and my cousin ______two volleyballs.