—I’m sorry I ________not get there on time. The traffic is heavy now.
—That’s OK. Take your time.
句意：——对不起，我可能不能按时到达那里。现在交通很拥挤。 ——没关系。慢慢来。
考查情态动词。must必须；may也许；need需要；should应该。根据“The traffic is heavynow.”判断，应该是也许不能按时到达那里，此处表示肯定推测。故选B。
—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.
—Whose notebook is this?
—It ________ be Alan’s. It looks like his.
Mary ________ go to London next year but she is not sure.
