一、单项选择(每小题1.5 分, 共15 分)
1. [2023 郴州改编] —_______ people wear helmets (头盔) when riding electric bicycles?
—Yes. It’s a new traffic rule.
A. Can B. Must C. May D. Could
2. [2023 荆州] —You _______ take the subway to the airport, for I can drive you there directly.
—That’s very kind of you.
A. can’t B. needn’t C. mustn’t D. shouldn’t
3. Mike, you _______ play with fire. You _______ burn yourself.
A. won’t; can’t B. have got to; shouldn’t
C. don’t have to; must D. mustn’t; might
