Play, often ______ as an activity for younger children, is still important in the social development of teenagers.
#92505
A
to see
B
seeing
C
seen
D
to be seen
推荐题目
Sandstorms in Asia seem _____ in recent years as a result of desertification.
#93442
A
to increase
B
to have increased
C
having increased
D
increasing
_____, the subject was always in my mind.
#98858
A
Walking or sleeping
B
Walking or slept
C
Having walked or slept
D
To walk and sleep
(2011·北京高考)It's important for the figures______regularly.
#88944
A
to be updated
B
to have been updated
C
to update
D
to have updated
—Tom, must you have the light ______ all night? It’s really a waste. —Sorry, I won’t do it again.
#92350
A
burned
B
burning
C
to burn
D
to be burned
by beautiful green mountains and situated at the foot of Huangshan Mountain makes Tai Ping Lake a famous tourist attraction.
#94558
A
Surrounded
B
Being surrounded
C
Having been surrounded
D
Surrounding