问题

___we sleep together or apart is oneof the biggest cultural differences, and only in western societies ______ thefeeling that babies should sleep apart from their parents
A:might havesaved
B:must have saved
C:should havesaved
D:could have saved
B:must have saved
C:should havesaved
D:could have saved
正确答案是:
同类题型
It is said that free health system will soon be carried out in our city.— ________!
On returning home, she found a note _______ to the door, _______ “Call in later.”
He’s got himself into a dangerous situation ____ he is likely to lose control over the plane.
everal rounds of talks, the union leaderssuccessfully anagreement for a shorter working week.