About 20 million people in the world have no enough safe drinking water.
So we should ______ how to deal with the problems of water.( )
A.put onB.look after
C.think aboutD.get on with
There is no light on,they _______ be at home.
mustn't
can't
needn't
Jack is going to be an older brother.His parents are planning to have their child.
one
first
second
Some new airports in the west of our country.It will save our time to go there.
build
will build
will be built
Simon has done well in his studies, he still works really hard.( )
Since
If
Although
Unless
Please ________ the rubbish and put it into the proper rubbish bin.
look up
pick up
grow up