How long do you often spend _______ this book , boys? 
#49038
A
reads
B
to be read
C
to reading
D
reading
推荐题目
The librarian told the readers _________ loudly in the library.
#50370
A
to talk
B
not to talk
C
talk
D
talking
It took me a lot of time ____ my homework.
#49434
A
finish
B
to finish
C
finishing
D
finished
 If people ________ cutting down the forest, they will have nowhere _______.
#49453
A
keep, to live in
B
will keep, to live in
C
keep, to live
D
will keep, to live
Why not_____an English club to practice_____English? 
#51265
A
to join; to speak
B
join; speaking
C
join; to speak
D
to join; speaking