Don't use water to put out the fire if oil catches fire. As is known, oil ________ float on water.
#62205
A
shall
B
must
C
may
D
will
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The weather turned out to be fine yesterday.I        the trouble to carry my umbrella with me.
#63079
A
should have taken
B
could have taken
C
needn’t have taken
D
mustn’t have taken
— Catherine, I have cleaned the room for you . — Thanks. You_______. I could manage it myself.
#63169
A
needn’t do
B
needn’t have done
C
mustn’t do
D
shouldn’t have done