單項(xiàng)選擇題

I am sorry （） waiting for a long time.

A.to keeping you
B.to kept you
C.to have kept you
D.kept you

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單項(xiàng)選擇題

By this time tomorrow, the ship （）its repair work in the engine room.

A.will do
B.has done
C.had done
D.will have done

單項(xiàng)選擇題

I would have gone ashore with the second engineer, if I （） time.

A.have had
B.had have
C.had had
D.would have had