單項(xiàng)選擇題I broke my leg when I()skiing in America.

A.is
B.was
C.–(不填)
D.would be


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1.單項(xiàng)選擇題The road ()built last year.

A.has been
B.has being built
C.is being
D.was

2.單項(xiàng)選擇題When was the building()?

A.complete
B.completing
C.completed
D.completes