There are some students ______ to have known what they don’t really know, which is really harmful to them. 
#94235
A
pretending
B
to pretend
C
pretended
D
pretend
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