Tom is a careless person. He forgot________the door again when he went out yesterday.

A．to lock

B．locking

C．to have locked

D．having locked

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参考答案

考查固定用法。
句意：汤姆是个粗心的人，他昨天出去的时候又忘记锁门了。forget to do sth．意为“忘记去做某事” ，表示要去做，但是忘记了没去做；forget doing sth．意为“忘记做过某事” ，表示已经做了，但是忘记了而以为没做。本句表示要去锁门，但是又忘记锁门了，故选A。

1 We generally have four people working in the shop, but at________ periods we employ extra hands.

A．top

B．rush

C．tip

D．peak

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2 It is expected that by 2049 the population of the city________two million.

A．would reach

B．will have reached

C．will be reaching

D．would have been reached

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3 As the manager of this new company, Charles ________lots of work and almost had no time for pleasure.

A．took on

B．took after

C．took to

D．took off

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