.Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom. 
#97675
A
sitting, fixing
B
to sit, fixed
C
seating, fixing
D
seated, fixed
推荐题目
_________to the party, Joan was greatly hurt.
#94245
A
Having not been invited
B
Not having been invited
C
Having not invited
D
Not having invited
_____is a good of exercise for both the young and the old.
#98386
A
The walk
B
Walking
C
To walk
D
Walk