Mr Wang is busy everyday.He won't be back home___11 pm.A:when B:by C :at

问题描述:

Mr Wang is busy everyday.He won't be back home___11 pm.A:when B:by C :at

选C。本句的意思是“王先生每天都很忙,晚上11:00点他回不来”。at用在时间点前

B

B 意思是11点之前不会回来