Question

【题目】- I'm waiting for the mail. Do you know it will arrive?
- Usually it comes by 4:00p. m.
A.how
B.where
C.when
D.what

Answer 1

【答案】C
【解析】句意：——我正在等邮件, 你知道它什么时间发过来? ——通常在下午4点前会收到.根据答语Usually it comes by 4: 00 p. m.可以判断使用when作连接词, 故选C。