问题

Rober will start a driverless taxi service,so don’t feel surprised when you see a taxi coming_____a driver.

A:by
B:of
C:without
D:with;

正确答案是：

同类题型

was extremely hot last summer. ,it was the hottest summer of the last 50 years.

I am really proud of my team who were honoured though defeated because they gave up the chance for agold medal to help someone __________.[ ]

e photographs in this book, ____ stated otherwise, date from the 1950s.

选出加横线虚词意义和用法完全相同的一项（）

Why didn’t you go to the concert last night? —It was something interesting.