Anna is often heard ______songs in her room.
#97522
A
sung
B
singing
C
sing
D
to sing
推荐题目
--What do you think of cloning?--No doubt it’s a great invention. But ________, it may have some side effects.
#89815
A
if not properly handling
B
if properly not handled
C
if not properly handled
D
if properly not handling
Mr. Andrew taught his students how to develop the basic skills in the physics class, ______ everything through jokes and experiments.
#92818
A
to explain
B
explained
C
explaining
D
explains
—Tom is so worried about the test that he said he was going to study all night. —Tell him he should quit ______ and get some help.
#93350
A
to have worried
B
to worry
C
worrying
D
from worrying
With the victory at the French Open, Li Na has reached NO．4 in the world,______ the previous Asian record．
#92976
A
equaled
B
equaling
C
to have equaled
D
having equaled
_______ for several weeks, the city was short of food and clothing.
#92857
A
As having flooded
B
As flooding
C
Having been flooded
D
To flood