问题
which seems to be so simple and common, is______ makes life possible.
A:that
B:which
C:what
D:where
B:which
C:what
D:where
正确答案是：
同类题型
Do you like to play _____ping-pong orplay _____guitar—Ping-pong.
Look at the clouds. It is going to rain.—-______ . Let’s go home quickly.
Can you go to the concert with us onweekends —_________, but I have to babysit mysister.
Will you come to my party next week—- _____. I’ll fly to Shanghai for a meeting.