单项选择题
A.has been built B.is built C.was built D.is being built
This ancient letter was written（）a pen.A.withB.byC.onD....
单项选择题This ancient letter was written（）a pen.
A.with B.by C.on D.in
The policeman was attacked（）a knife.A.onB.byC.forD.with
单项选择题The policeman was attacked（）a knife.
A.on B.by C.for D.with
It is hoped that the weather will（）warm for three more ...
单项选择题It is hoped that the weather will（）warm for three more days.
A.last B.go on C.keep on D.stay
