18. ___________ on and on, the speaker did not seem to notice that most students dozed off.
(A)Droned
(B)To drone
(C) Droning
(D) Being droned

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統計: A(14), B(11), C(84), D(10), E(0) #1676265

詳解 (共 2 筆)

#2972164

drone on 低沉單調地說

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#3781892
Because he/she  was ...
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