问题
选择题
He can’t help __ housework, for he is busy __ for the examination.
A.doing; preparing
B. to do; to prepare
C.doing; to prepare
D.to do; preparing
答案
答案:D
He can’t help __ housework, for he is busy __ for the examination.
A.doing; preparing
B. to do; to prepare
C.doing; to prepare
D.to do; preparing
答案:D