-If you have time tonight，I’d like to invite you to a ball.　-That’s very nice of you，but

发布时间：2020-08-14 23:54:14

-If you have time tonight，I’d like to invite you to a ball.　
-That’s very nice of you，but are you     ?
A. free
B. careful
C. serious
D. true

网友回答

A. free
B. careful
(答案→)C. serious
D. true
解析： serious：严肃的；认真的。你是当真吗?
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