Akira Nakayama ____delay the filming of his documentary in the rainforest when his equipment did not arrive on schedule.
2023-05-26
A.has to
B.had to
C.having to
D.will have to
参考答案：B
B.had to
C.having to
D.will have to
参考答案：B
四个选项是短语have to的几种时态。A选项为一般现在时，B选项为过去时，C选项为-ing形式，做非谓语成分；D选项为一般将来时。题目意为“当Akira Nakayama的设备没有按照预计时间到达时，他___推迟在热带雨林中拍摄纪录片。”when引导的时间状语从句是过去时，所以主句也应该是过去时，因此选B。
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