第2题
A.had the plane landed
B.did the plane land
C.the plane had landed
D.the plane landed
第3题
A.had the plane landed
B.did the plane land
C.the plane had landed
D.the plane landed
第5题
Hardly ______when they ran toward it.
A. had the plane landed
B. did the plane land
C. the plane had landed
D. the plane landed
第6题
A.had the plane landed
B.did the plane land
C.the plane had landed
D.the plane landed
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