__ carefully if any change occurs when doing experiments in the lab..
#88398
A
Observe
B
To observe
C
Observed
D
Observing
推荐题目
When he borrowed the camera last time, he broke it and I had to pay to get it _______.
#95682
A
repair
B
repairing
C
to repair
D
repaired
_____in a well—known university is what everybody wishes for.
#98983
A
Educated
B
Being educated
C
To educate
D
Educating
—Is there any possibility of Jack ________chairman at the conference? —Not in the least because audience generally think little of him
#97685
A
to elect
B
electing
C
to be elected
D
being elected
Though ______ _money, his parents managed to send him to a key university.
#88630
A
lacked
B
lacking of
C
lacking
D
lacked in
Mr.Smith warned his daughter ______ after drinking.
#94247
A
to never drive
B
never driving
C
never to drive
D
never drive