34. When he knocked at the door, my mother was busy ___

34. When he knocked at the door, my mother was busy ____ supper.

#81051

preparing for

in preparing

to prepare for

to prepare

推荐题目

It was the largest experiment we had ever had; it _____ six hours.

#81736

ended

finished

prolonged

lasted

With more forests being destroyed, humans have to _______ a lot from what they have done.

#66733

separate

suffer

stop

protect

You don't ___ to go there if you have no time.

#81227

need

want

must

ought

—Does the idea of working abroad　　　　you？—Yes. But I have no chance.

#66692

lead to

adapt to

appeal to

contribute to

 Iraq has _______ too many wars since the 1990s, making his people _______a lot.

#74439

got through; suffer from

looked through; suffering

gone through; suffer

passed through; suffered

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