语法词汇练习 语法大全 语法详解 英语听力 
What can we students do _____ the environment?
#50177
A
to protect
B
protected
C
protecting
D
protects
下一题
推荐题目
When I grow up, I want_____ a football player.
#50514
A
be
B
to be
C
am
D
are
I would like      e-mails to friends．
#50484
A
to write
B
write
C
writing
D
to write to
—What do you think about the idea?—I am really against _________ a running race in the street.
#48956
A
to have
B
having
C
to having
D
have
Tom wants ________ you. Are you free?
#48737
A
to speak
B
tell to
C
to talk to
D
talk to
—Do you want ____for your son? —Yes, I do.
#48861
A
to buy any books
B
buy any books
C
to buy some books
D
buy some books