问题

Sodifficult itto work out the problem that I decided to ask Tom for advice
A:must
B:mustn't
C:should
D:shouldn't
B:mustn't
C:should
D:shouldn't
正确答案是:
同类题型
In front of the gate of the park ____ like an umbrella covering the entrance.
Every day we spend half an hourmorning exercise。
eks left lying on theroad with no one offering help, _____ a heated discussion on the Internet .
I did not know the number, but I his voice when he said “Hey, Mike. It’s me.”