He spoke for quite a while, but I was _____________ puzzled about what he said.
#75224
A
not a little
B
not too
C
not a bit
D
too much
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With so much noise of the traffic, I couldn’t ____ and do my research work.
#72169
A
put down
B
settle down
C
break down
D
take down
He hurried out and ______the chair.
#70606
A
knocked up
B
knocked off
C
knocked back
D
knocked over
 Whoever leaves the lab last, _____ all the lights are turned off.
#76018
A
make sure
B
make sure of
C
be sure
D
be sure of