题目内容

I __________ (fall asleep)while reading the English textbooks. Luckily, my roommate woke me up in time.

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At this time tomorrow we will __________ (fly) over the Atlantic.

—You have left the light on.—Oh, so I have. I ________ (go) and turn it off.

Selecting a mobile phone for personal use is no easy task because technology ________ (change) so rapidly.

He’ll be an astronaut by the time he ________ (be) thirty.

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