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
I'm going for a field trip but I haven't decided_________.
#49954
A
what to do
B
to do what
C
where to go
D
to go where
Colours can make us ______ or sad.
#50065
A
feel happy
B
feel happily
C
to feel happy
D
to feel happily
The artist said he hoped               drawing the picture soon.
#49866
A
his son to finish
B
to finish
C
finishing
D
his son will finish