John _______ to be a polite man. But in fact he is veryrude.
A、pretendsA
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After working for twenty hours without any rest, the doctors were _______.
The engineers in this lab spent several weeks _______their plans for the new bicycle.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
The _______ is nearly dead , so I can not start the car again.
Although the trffic is not busy, he likes to drive at a_______ speed.
