题目内容
用 be to do sth. 和 be about to do sth.填空(1) I _________ leave when someone knocked at the door.
(2) We _________ start for Hong Kong tomorrow.
(3) You _________ start for Shanghai at once.
答案:
解析:
解析:
(1) was about to
(2) are to (3) are to |
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