—I have never been to the Great wall. —If you have an opportunity _______ there, you must take it.
#48916
A
to go
B
to going
C
going
D
go
推荐题目
It took her some time_______English in class．
#49634
A
to finish reading
B
to finish to read
C
finish reading
D
finish to reading
--How did you help him ___over the difficulties?--I made it by_______ him never to give up.
#50124
A
get, encouraging
B
getting, encouraging
C
to get, encouraged
D
getting, encouraged
How long do you often spend _______ this book , boys?
#49038
A
reads
B
to be read
C
to reading
D
reading