Do you know that you ..... stop when the traffic ...

★ Expressing Obligation and Modals

“Do you know that you ….. stop when the traffic lights are red?”

The best answer to complete the sentence is…

A. ought to

B. have to

C. must

D. should

Preview next quiz:

I’m really out of shape. I _____________ going to the gym regularly.

A. must be starting

B. have to start

C. has to start

D. must to start