问题

“When did he leave the classroom” “He left_______ you turned back to write on the blackboard”
A:is
B:was
C:are
D:were
B:was
C:are
D:were
正确答案是:
同类题型
She keeps _______ the piano for two hours every day and is good at it.
Since you like the car so much,why not buy it?—________,I can’t afford it.
Can you play the guitar — No. I _ ___ . I can play the violin.
For example, don’t keep looking at the ground or staring into space, or talk with your arms _____