The books by Mo Yan are so popular that they are in great _______.  
#5190
A
quantity
B
progress
C
production
D
demand
推荐题目
The _____ on her face suggests that she didn’t pass the driving test.
#5194
A
appearance
B
impression
C
attitude
D
expression
 What surprised me most was _________ to meet his girlfriend again.
#5236
A
not his allowing
B
his not being allowed
C
his being not allowed
D
his having not been allowed