________ with some research materials, he decided on three possible approaches in his experiment.
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A
Preparing
B
Prepared
C
Having prepared
D
Prepare
推荐题目
______on his past mistakes, Ted realized that he had stayed around the wrong people.
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A
To reflect
B
Reflecting
C
reflected
D
being reflected
. There are many mistakes in his essay, ______his failure.
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A
which results
B
leading to
C
led to
D
that led to
Tigers _______ meet-eating animals ________ meats.
#96915
A
belonged to; feed on
B
belonging to; feed on
C
were belonged to; feed on
D
belonging to; feeding on
The secretary worked late into the night,_______ a long, speech for the president.
#90043
A
to prepare
B
was preparing
C
prepared
D
preparing
The house  _________  now used to be a storeroom.
#97177
A
to be torn open.
B
torn down
C
being torn down
D
tearing open