问题
We ___ use mobile phones when the plane takes off.
A:may not
B:shouldn’t
C:needn’t
D:mustn’t;
B:shouldn’t
C:needn’t
D:mustn’t;
正确答案是：
同类题型
By the end of last year, another new theme park _______ completed in that area
Have you seen Li Ming recently? I wonderwith his studies.
I’m new here.Would you please ___ me a favour?
Must I return the book this week– No, you ______. You can _____ it for 20 days.
Lee is new in Yangzhou. Maybe he needs a _____for sightseeing.