问题

How did it ____ that humans speak so many different languages? [ ]
A: come out
B: come off
C: come about
D: come round
B: come off
C: come about
D: come round
正确答案是:
同类题型
You’d better go there by train.The train ticket is____ the airplane ticket.
The moonlight is shining(照耀) in ____________ the window. Everything in the room looks so nice.
___________ caused the accident is still a complete mystery.
need is nothing but an interestingbook,___ that can kill the time tonight