Jack wasn't saying anything but the teacher smiled at him ____ he had done something very clever.
A as if B in case C while D though
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That’s all I have to say. Is there anything you’d like to______ ，Terry？
| A．talk | B．require | C．add | D．deliver |
Einstein liked Bose’s paper so much that he _____ his own work and translated it into German.
A. gave off B. turned down C. took over D, set aside
If a person has not had enough sleep, his actions will give him _____ during the day.
| A．away | B．up | C．in | D．back |
The good thing about children is that they_____ very easily to new environments.
| A．adapt | B．appeal | C．attach | D．apply |
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