题目内容
Isn't ________ difficult to learn to swim?
A.it
B.that
C.they
My mother will make fish ________ dinner tonight.
A.to
B.with
C.for
They went on the bus one by ________.
A.one
B.first
C.ones
I did ________ exciting sport once.
A.the
B.a
C.an
I am afraid of ________ in the dark.
A.walk
B.walking
C.walks
It is ________ exercise every day.
A.important
B.possible
C.impossible
The usual sports are ________.I don't like them.
A.bore
B.bored
C.boring
It was never ________ how he died.
A.discover
B.discovery
C.discovered
This box is too heavy.I can't ________ it.
A.bring
B.carry
C.take