With his attention _________ on his book, he didn’t notice someone entering his room.
#90427
A
concentrating
B
concentrated
C
to concentrate
D
concentrates
推荐题目
_____ to try his fortune abroad, he left for America.
#89961
A
Having determined
B
Being determined
C
Determined
D
To determine
The living room is clean and tidy, with a dining table already _____ for a meal to be cooked.
#89959
A
laid
B
being laid
C
put
D
being put
The glass of water is too hot. I prefer some cold _____ water.
#98249
A
to boil
B
having boiled
C
boiled
D
boiling
The sports meeting, due to ______ this weekend, has been put off due to the rain these days.
#93229
A
being held
B
holding
C
hold
D
be held
Taobao．com has begun selling tickets online for international flights， to cut the market share of Ctrip．corn and other competitors．
#96778
A
to aim
B
having aimed
C
aiming
D
being aimed