We must try our best to the river being polluted any more.
#101113
A
separate
B
keep
C
prevent
D
guard
推荐题目
I had hoped to see her off at the station, but I _____ too busy.
#103703
A
was
B
had been
C
would be
D
would have been
---Joan, what _______ in your hand ? ---Look! It’s a birthday gift for my grandma.
#99802
A
are you holding
B
had you held
C
do you hold
D
will you hold
—I saw Jane and her boyfriend in the park at eight yesterday evening. —Impossible. She TV with me in my home then.
#99767
A
watched
B
had watched
C
would watch
D
was watching
I _____ up early when I was in high school, but now I _____ up around 7:00 am.
#103034
A
used to get; used to get
B
am used to getting; used to get
C
used to get; am used to getting
D
am used to getting; am used to getting
Close the door of fear behind you，and you _________ the door offaith open before you．
#99885
A
see
B
have seen
C
will see
D
are seeing