When it comes to “empty-nest syndrome(综合症)”, parents are advised to _______regular contact with children through phone calls, emails, texts or video chats. 
#12127
A
substitute
B
sacrifice
C
associate
D
maintain
推荐题目
--- Ouch! You stepped on my toe!--- I’m sorry, I didn’t __________.
#13223
A
mean to
B
mean to do
C
mean to have
D
mean to step
________ people were hurt in the accident.
#11260
A
Hundred of
B
Hundred
C
Hundreds
D
Thousands of
The careless driver is _______ for the traffic accident_______ yesterday.
#13481
A
to blame; happened
B
to blame; happening
C
to be blamed; happened
D
to be blamed; happening