Discovery in a South African cave suggests that modern human behavior ____ much earlierthan ____.
#88366
A
begin, previously thought
B
began, previously thought
C
should begin, previous thinking
D
began, previous thinking
推荐题目
 I really don’t know ____ .
#97498
A
to swim
B
how to swim
C
to swim how
D
how swim
---The last one ___ carries all the luggage.   ---Agreed!
#92550
A
arrived
B
arrives
C
to arrive
D
arriving