My wallet is nowhere to be found.I_____it when I was on the bus.a.must dropb.should hav

My wallet is nowhere to be found. I () in the store.

A. must drop it

B. must have dropped it

C. should have dropped it

D. ought to have dropped it

A.A. I_______when I was on the bus.

B.B.must drop it

C.C.should have dropped it

D.D.must have dropped it

E.E.had dropped it

听力原文： As my train was not due to leave for another hour, I had plenty of time to spare. After buying some newspapers to read on the journey, I made my way to the luggage office to collect my suitcase I had left there three days before. There were only a few people waiting. I took out my wallet to find the receipt for my case. Unfortunately, it was nowhere to be found.

When my turn came, I explained the situation sorrowfully to the assistant. He then handed me a form. and told me to make a list of the chief contents of the case. Only when they were correct could I take the case away. I racked my brain trying to remember all the articles I had packed in a hurry. After I had filled out the form, I went to look among the shelves. There were hundreds of cases and for one dreadful moment I began to worry that someone might have already claimed my case. To my great relief, the case was lying on its side high up in a corner. After I had examined the items inside, the assistant told me to take the case away. Again I took out my wallet: this time to pay. I pulled out a ten-shilling note and the "lost" receipt flipped out with it. Blushing, I looked up at the assistant. He was nodding his head knowingly, as if to say that he had often seen this happen.

(23)

A．A Trip by Train.

B．The "Lost" Receipt.

C．An Embarrassing Moment.

D．At the Luggage Office.

A.screwed

B.wrenched

C.wedge

D.extracted

A.that

B.when

C.where

D.which

A.Where did you that

B.Where was it you

C.Where it have you

D.Where was it that you

A.so

B.that

C.what

D.which

A.everywhere

B.anywhere

C.nowhere

D.somewhere

A.It’s not bad.

B.You will be rich.

C.That’s terrible.

D.Where is it now？