【正文】 ，此處表示沒有把握的推測，因此用may，故選B。2．B解析：B【詳解】句意：——你媽媽這周六將在家嗎？——很難說。考查情態(tài)動詞和連詞辨析。 can B．might。 mending B．needed。 of B．No, we mustn’t。t C．needn39。 dare climbingC．dare saying。t C．shouldn39。 and D．work。外研版情態(tài)動詞基礎(chǔ)練習(xí)題一、選擇題1．You39。 or C．working。t B．can39。 dares to climbB．dare to say。t B．shouldn39。get used to it in winter.A．can’t B．needn’t C．mustn’t D．shouldn’t20．—Dad, must we wait until the light bees green? —Yes, I am afraid we ________. That’s the traffic rule.A．may B．can C．have to D．need21．—Shall I tell him the change of the time right now?—I’m afraid you ________, otherwise he will be late for the meeting.A．can B．may C．must D．need22．— Listen! Tom ________ be listening to the music while doing his homework.— Let’s go upstairs to remind him to turn it off.A．should B．could C．would D．must23．—Suzy described every detail of the accident just now.—Her memory ________ be pletely back.A．shall B．need C．must D．could24．—Is that Mr Zhou?—It ________ be him. He has gone to Beijing.A．can B．may C．can’t D．shouldn’t25．Most young people like shopping online because they ________ spend much time going from shop to shop.A．needn’t B．can’t C．mustn’t D．shouldn’t26．—Will Jim e to Yangzhou for a holiday?—He ________e and it depends on how much homework he will have.A．may B．should C．must D．need27．—In China, many parents plain that their children have to stay up late to do the homework. —Don’t worry. The government has realized the problem. I’m sure there ________ be good news soon.A．can B．should C．need D．must28．—Is it usually warm in Yancheng in May??—Yes. But it _______ be rather cold sometimes.A．must B．should C．would D．can29．—Is it really necessary for me to go shopping with a mask on?—I’m afraid you ________ in public. It is not only to protect yourself but also to protect others.A．must B．should C．can D．need30．You ________ pay too much attention to protecting yourself if you plan to go abroad.A．mustn’t B．can’t C．shouldn’t D．needn’t31．According to the rule, used batteries ________ be dropped in the red bin for harmful wastes.A．may B．would C．should D．might32．—Must we stop the Japanese government discharging nuclear waste water (排放核污水) into the Pacific Ocean?—________. Because everyone should protect our earth and it is bad ________ us to eat the polluted seafood and drink the waste water.A．Yes, we can。 for33．—Could you tell me how to renew the library books?—With pleasure. You ________ e to our desk every time. It’s easier to renew them online.A．can’t B．mustn’t C．needn’t D．