摘要：did;start;have played 询问动作发生的具体时间.应该用一般过去时,表示动作持续了一段时间直到现在.一般用现在完成时.
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— When you to learn to skate?
— Five years ago.
| A．do; start | B．will; start |
| C．had; started | D．did; start |
—Mr. Wang is in Nanjing for a trip.
—Oh, really? When ______ he ______ the trip?
A．does; start B．will; start
C．did; start D．is; starting
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— When you to learn to skate?
— Five years ago.
A．do; start B．will; start
C．had; started D．did; start
查看习题详情和答案>>