I really appreciate that your help is of great _________. 
#19778
A
useful
B
value
C
important
D
worth
推荐题目
---What is he like ?  --- He is ____
#20342
A
well
B
healthy
C
healthy and good
D
honest
A good diet and some moderate exercise are ____ to good health. 
#18063
A
adventurous
B
approximate
C
fundamental
D
balanced