How did it______ that humans speak so many different languages?
#83643
A
come out
B
come off
C
come about
D
come round
推荐题目
 Any student _____ will be disqualified from the exam. 
#81935
A
catching cheating
B
catching to cheat
C
caught cheating
D
caught to cheat
 ---John, whose house is that? ---It ______Mr White.
#68247
A
is belonging to
B
is belonged to
C
belongs to
D
belonged to
Have you _____ the book yet?
#81474
A
find
B
discovered
C
invented
D
found