BythetimeIgottotheairport,thep-优题课

By the time I got to the airport, the plane ________.
A. took off B. has taken off C. had taken off

科目英语题型单选题难度中等

知识点：主语+系动词+表语时态辨析比较介词

What’s that _____ English?

一Spell it, please.一.

This is an .

一What’s that?一a key.

一Whatis it ?一black and yellow.

A．color; They are	B．colors; It’s
C．color; It’s	D．colors; They are