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【判断题】
I started looking after these plants whose host went out to have a holiday.

正确
错误
【单选题】
Water, when boiled, will____ steam.

give away
give up
give off
give out
【单选题】
Did Tom tell you to water the flowers?

No. And so did I
No. And neither did I
He did And so I did
He did And so do I
【单选题】
The flower is dead. I ____ it more water. ?

must give ?
should have given ?
?would have given ?
will give ?
【单选题】
19.Never____ realised that water is so precious

hadI
I
haveI
didI
【单选题】
If a substance is dissolved in water or heated, it may ____ a gas.

give into
give over
give off
give away
【单选题】
13.Oil floats if you ______it on water.

will pour
are going to pour
pour
poured
【单选题】
Man________die without air or water.

will
have to
must
should
【单选题】
15.Man _____ die without air or water.

will
have to
must
should
【单选题】
Water_________ both by man and other living things.

was needed
is needed
needs
are needed