I wondered_____________.( )
A.which way was the wind blowing
B.which one is the most convenient
C.which of the houses did you live in
D.which school it was you went to
The lights is on.When you leave,please _____.
OK,I won't forget ____it.( )
turn it off; to do
turn off it; doing
turn on it; to do
It takes me half an hour _____playing the piano.How about you?
I usually spend 20 minutes ____it.( )
practicing; on
to practice; in
to practice; on
Someone is knocking at the door,Is it Tom?
It _____him.He has gone to Beijing.( )
may not be
can't be
mustn't be
The weather in Qiqihar is colder than ____in Shanghai.( )
those
it
that
WeChat(微信) is widely used._____the young _____the old are interested in it.
Either; or
Neither; nor
Not only; but also