问题

Dad, must we wait for the green light — Yes, I’m afraid we ________. That’s the traffic rule (规则).

A:can
B:may
C:need
D:have to;

正确答案是：

同类题型

You must help me with the housework first, ________ I can’t go to play tennis with you.

The first time for everything is always the most exciting one_____ it is your first day in a new job or going on a first date, you will always remember those “first” times.[ ]

The red quilt is very cheap.

Cheer up! No matter how ________ you progress, you are ahead of those who never tried

are his pens—They are in the box.