Only through constant practice can the ability of using a foreign language be _______. 
#71692
A
earned
B
acquired
C
gained
D
achieved
推荐题目
The plan __________just because people were unwilling to cooperate.
#83398
A
broke down
B
pulled down
C
turned down
D
put
John____Tom by a yard and____the race last year.
#83537
A
defeated; won
B
was beat; got
C
defeated; got
D
was beat; won