The mother was nervous because she had not     her son who was away at a boarding school.
#70733
A
heard from
B
heard of
C
heard about
D
heard out
推荐题目
This job is ______ doing, but it isn’t ______ to spend so much time on it.
#64816
A
worth; worth
B
worth; worthwhile
C
worthwhile; worth
D
worthwhile; worthwhile
 We would rather die than ______ difficulty. 
#74017
A
give up to
B
give in to
C
give way to
D
give back to
The policeman was ________ abusing his power when performing his duty, but it hasn’t been ______ yet. 
#71689
A
charged with; confirmed
B
blamed for; approved
C
assessed ; proved
D
accused of; proved