问题
Everyone in my class passed the exam. — Oh, really? It _____difficult. [ ]
A: can't have been
B: needn't have been
C: must be
D: mightn't be
B: needn't have been
C: must be
D: mightn't be
正确答案是：
同类题型
Add the pepper _______ the turkey sandwich. Next, put cheese _______ the bread.
17. — Will someone go and get Mr. White?— He’s already been ____ .
ed Peter and ____ of his two sisters,but none of them knew when their uncle came back
What season is your favourite—I like __________ best because the weather is very cool.