Anna is _____ to work out the math problems and gets a good grade. 
#45354
A
hard enough
B
enough hard
C
hard-working enough
D
enough hard-working
推荐题目
The old man lives _______. So he often feels ________.
#46527
A
alone, lonely
B
alone, alone
C
lonely, lonely
D
lonely, alone
Pudong International Airport is one of_______ airports in the world.
#45593
A
big
B
bigger
C
the bigger
D
the biggest