It never _____ humans until the mid1990s that some animals can be cloned.
#92718
A
occur
B
is occurred
C
occurred to
D
occurred
推荐题目
___________, I have never seen anyone who’s as wise as John.
#91964
A
As long as I have traveled
B
Now that I have traveled so much
C
.As I have traveled so much
D
Much as I have traveled
— Do remember to take this medicine three times a day with warm boiled water. — _________.
#94075
A
Put it
B
Made it
C
Got it
D
Taken it
I don’t think he could have done such a stupid thing last night, _____?
#95203
A
did he
B
could he
C
do I
D
hasn’t he
and we’ll finish the work on time.
#92154
A
If we are given two more days
B
Two more days
C
Having two more days
D
Given two more days