—According to the schoolrules, the students ________ get their ears pierced.
—I think that’s right.
句意：——根据校规，学生不能穿耳洞。——我认为那是对的。学生应该更加注意他们的学习。
考查情态动词辨析。mustn’t禁止；can能够；needn’t不必；should应该。根据“According to theschool rules, the students … get their ears pierced”可知，校规规定学生不允许穿耳洞，故选A。
—According to the schoolrules, the students ________ get their ears pierced.
—I think that’s right.
—In China, many studentsfeel stressed because of too much homework.
—Don’t worry. Our government has realized this problem. I’m sure there________ be good news for them soon.
This book ________ be Jim’s.His name is on it.
—Look! There are so many people in the restaurant.
—Yes. The food there ________ be delicious.
—____________ we leave the library before 5 o'clock?
—No, you needn't. You can stay here until 5:30.
The biggest challenge weall face is to prevent further environmental disasters. We ________ take action before it is too late.
Listen up, guys!Everyone ________ wear a mask. Go and buy one if you don’t have one.
—Must I return this book before Friday, Sir?
—No, you ________,dear. You can keep it for two weeks.
You’d better take an umbrella when you go out, because it ________rain.
The man _______ be a doctor in this hospital, but I’m not sure.
