问题

John, why are you so upset? —Imy cell phone all morning but it is nowhere to be found

A:am looking for
B:have looked for
C:have been looking for
D:had looked for

正确答案是：

同类题型

I think that the desk in the shop differs ____ the one I have at home _____ colour and size

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A good student connects what he reads what he sees around him .

Is Andy _____honest student–I think so. Do you know he donates 200yuan to Project Hope every year.

I really don’t know _________ I put my wallet after I paid the bill．