The rise of oil prices made scientists search for new energy resources ______ oil．
#97714
A
replace
B
replacing
C
to replace
D
replaced
推荐题目
The boy is only five years old，but he is quite used _____ the telephone．
#98394
A
to answer
B
to answering
C
of answering
D
by answering
She was the first woman ______ to the board.
#94213
A
to be appointed
B
having been appointed
C
appointing
D
to appoint
His suggestion made me angry, but _______.
#96310
A
making others happy
B
to make others happy
C
others happy
D
his advice others happy
_____ the big snake, the little girl stood under the tree _____ to death.
#98834
A
Seeing; frightened
B
Seeing; frightening
C
Seen; frighten
D
To see; frightening
—Is Bob still performing?—I'm afraid not.He is said ________ the stage already as he has become an official.
#89171
A
to have left
B
to leave
C
to have been left
D
to be left