Today, people are paying more and more attention to their health,         books on keeping healthy extremely hot.
#96042
A
to make
B
making
C
make
D
made
推荐题目
The manager promised to keep me ____ of how our business was going on.
#89380
A
to be informed
B
on informing
C
informed
D
informing
Mary seems _______ the bad news, for she looks nice and happy.  
#92386
A
not to have learned
B
not to be hearing
C
not having learned
D
not to be