Although they plant trees in this area every year, the tops of some hilla are still_____. A: vacant B: bare C: blank D: empty

If he _____, don’t bother him. A: will still be working B: still has been working C: still works D: is still working

About two thirds of the population in China ______ in the countryside. A: is still living B: were still living C: was still living D: are still living

2.Read the following sentences.1.He is a boy. 2.He is still a boy.3.I think he is still a boy.4.Of course he is still a boy.5.Of course he is still a clever boy.6.Of course he is still a clever and handsome boy.7.Of course he is still the clever and handsome boy of theirs.8.Of course he is still the clever and handsome boy of Mr. Smith.9.Of course he is still the clever and handsome boy of Mr. And Mrs. Smith.10.Of course he is still the clever and handsome boy of the whole family.

No decision has been made about what to do next. We ______ it. A: still consider B: still considered C: are still considered D: are still considering

The underground connection ___ when I moved into the house. A: is still being built B: was still being built C: was still building

Old as he is, he still studies English.______ ______ ______ , he still studies English.

_____ or not is still uncertain.

What do Americans still prefer to do when they travel aroundThey still prefer to drive ______.

__________ to some parts of South America is still difficult, because parts of the continent are still covered with thick forests.