Cars, buses, bikes and people stop when the traffic lights are red.A.can B.may C.must
---Would you mind ______ the door? It’s cold outside.--- OK. I’ll do it right now.
---Is doing morning a good habit? ----Yes, it is.
It’s my ___________ time to go to Beijing. I never went there before.
I get _____ flu. I should see a doctor at once.
There was a big earthquake in Japan, but luckily many people _______.