He was so busy his homework that he forgot to have supper.A. to doB. doC. doingD. does

发布时间：2020-08-23 02:11:26

He was so busy      his homework that he forgot to have supper.
A. to do
B. do
C. doing
D. does

网友回答

A. to do
B. do
(答案→)C. doing
D. does
解析：句意：他总是忙着做功课，以至于忘记吃晚饭。be busy doing sth忙于做某事，固定句型，故选C
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