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
 the shark drawing closer to her,the clumsy swimmer was ____almost to death.
#89370
A
Seeing;scared
B
Seeing;scary
C
Seen.;scare
D
To see;scared
No one was permitted ______ the empty house without his permission. 
#96238
A
entering
B
to enter
C
entering into
D
to enter into