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
 The situation put us at a serious ______, which made us very worried.
#12523
A
advantage
B
condition
C
disadvantage
D
situation
— How do you like his new novel? — It is ____ interesting than I expected. 
#14338
A
a great deal much
B
a great deal of more
C
a great deal of much
D
a great deal more
Old-fashioned phones matter when wireless networks _____ in disasters.
#13687
A
turn down
B
break down
C
turn out
D
break out