13.-I knocked but nobody answered the door. -They asleep then and didn’t hear you. A. must be B. should be C. must have been D. should have been 查看更多

 

题目列表(包括答案和解析)

—I knocked but nobody answered the door.

   ----They _____asleep then and didn’t hear you.

    A.must be     B.should be    C.must have been   D.should have been

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— I knocked but nobody answered the door.

— They _______ asleep then and didn’t hear you.

A. must be   B. should be  C. must have been  D. should have been

 

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—I knocked but nobody answered the door.
----They _____asleep then and didn’t hear you.

A.must beB.should beC.must have beenD.should have been

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—I knocked but nobody answered the door.

—They __________ asleep then and didn’t hear you.

A. must be

B. should be

C. must have been

D. should have been

 

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—I knocked but nobody answered the door.

—They __________ asleep then and didn’t hear you.

A. must be

B. should be

C. must have been

D. should have been

 

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