问题补充:
He devoted himself to his research work, having no time to play.
A. exactly
B. gratefully
Cloosely
D. entirely
答案:
A. exactly
B. gratefully
C. loosely
(答案→)D. entirely
解析:考查副词辨析:A. exactly确切地,B. gratefully感激地C. loosely松散地,D. entirely完全地,句意是:他全身心的投入到研究工作中,没时间玩。选D。
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