However much you have done, you ought to     the help you’ve received from others.
#72503
A
donate
B
acknowledge
C
conduct
D
guarantee
推荐题目
The woman stayed at home to _____ her very sick child. 
#66689
A
tend
B
educate
C
refresh
D
advocate
The number of the students is_________ rapidly in our school.
#72389
A
expanding
B
stretching
C
extending
D
expecting