Scientists still wonder whether cloning will help or harm us and where it ____ us.
#103545
A
has led
B
is leading
C
had led
D
would lead
推荐题目
The library needs ________, but it’ll have to wait until Sunday.
#104295
A
cleaning
B
be cleaned
C
clean
D
being cleaned
 Just look at the room. My roommate ____ up his clothes.
#104840
A
is never hanging
B
will never hang
C
never hangs
D
never hanged
It was the second time that we ______ in holding such important parties.
#100119
A
had succeeded
B
succeed
C
succeeded
D
have succeeded