Having lost his key，________.
#91037
A
he couldn’t enter the room
B
the gatekeeper offered to help
C
the door was forced open
D
the room couldn’t be entered
推荐题目
When ____about his family, he is always refusing to answer.
#94774
A
asked
B
asking
C
being asked
D
mentioned
It will take a long time for the effective use of natural resources _________.
#90397
A
to be made
B
to make
C
being made
D
making
The criminal ______ fire to a store and after a moment the whole store ______fire.
#97100
A
made a; lit a
B
set a; caught
C
caught; was on
D
set; was on
. He made up his mind to devote his life____________the river____________polluted.
#97630
A
to prevent, to be
B
to prevent, from being
C
to preventing, to be
D
to preventing, from being
Take care not to get your shoes ______ in mud．
#96603
A
wet or covered
B
to be wet or covered
C
to be wet or covered
D
wet or be covered