You _______ water in the garden. It looks like rain.
A. must
B.may not
C.don’t need
D.needn’t
A. must
B.may not
C.don’t need
D.needn’t
第4题
--- Could I have a bottle of water, please?
--- ____________.
A. Thank you very much
B. Certainly, madam
C. See you later
第5题
If you intend to melt the snow for drinking water, you can__extra purity by running it through a coffee filter.
Aassure
Binsure
Creassure
Densure
第6题
A.eat balance meals
B.drink lots of water
C.avoid second-hand smoke
第7题
how can you create good vacuum on the fresh water (FW) distiller ?
第8题
A.See
B.Watch
C.Miss
D.Look at
第9题
The external flotation bladder on an immersion suit should be inflated ______.
A.before you enter the water
B.after you enter the water
C.after one hour in the water
D.after you notice that your suit is losing buoyancy
第10题
A.water
B.cup of water
C.waters
D.cups of water
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