People _________ rivers for transportation since the beginning of history.
#36687
A
used
B
have used
C
use
D
had used
推荐题目
To solve the traffic problem, more and more bridges ____________ across the river every year.
#37206
A
were built
B
will build
C
are built
D
are building
Mary often _______ her friends ______ her life in China.
#42486
A
tells, to
B
tells , about
C
asks , for
D
helps , to
There ____ two Chinese classes tomorrow morning.
#41790
A
is going to have
B
are going to be
C
is going to be
D
are going to have
—It’s dangerous to swim here. Look at the sign.—Oh, I _______ notice it. Thanks for telling me.
#42701
A
haven’t
B
won’t
C
don’t
D
didn’t
A moment, please．I’m checking if Mr. Smith _________ free tomorrow．
#42733
A
is
B
being
C
to be
D
will be