【正文】 . Don’t you see the light is still red?A．couldn’t B．wouldn’t C．mustn’t D．needn’t6．—The high school entrance examination is ing!— Yes, our teacher tells us we ________ be too careful while taking exams.A．mustn’t B．shouldn’t C．needn’t D．can’t7．We shouldn’t throw any objects from the building. Even a small object ________ cause serious injuries or death, when dropped from a great height.A．must B．should C．may D．need8．Exercise is helpful but it ________ be regular (規(guī)律的) exercise.A．must B．may C．can D．need9．—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．need10．When you visit a museum, some instructions should ________ and we’d better not ________ them.A．pay attention to。 be against B．be paid attention。 against D．be paid attention to。t B．shouldn39。t D．can39。d better __________ hard from now on, __________ you will fail the exam.A．work。 or C．working。 or21．—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。 of C．Yes, we must。 for22．— 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．We39。 can B．may not。 must D．may not。你能重復(fù)一下嗎？考查情態(tài)動(dòng)詞。根據(jù)“Would you please repeat it?”可知，我不能聽清，所以需要對(duì)方重復(fù)，故選B?，旣惤杞o了我們一些錢。shouldn’t不應(yīng)該；needn’t不必，不需要；couldn’t不可能；wouldn’t不會(huì)。故選B。 考查情態(tài)動(dòng)詞。根據(jù)“if I…say, it is not suitable for you.”可知，此處表示客觀情況驅(qū)使，因此用have to“不得不”。4．C解析：C【詳解】句意：——你為什么不早點(diǎn)告訴我？ ——我為什么應(yīng)該告訴你？我想要保守我自己的秘密。can能夠；may可以；should應(yīng)該；shall將，會(huì)。5．C解析：C【詳解】句意：——快點(diǎn)，杰克！讓那個(gè)我們盡快地過馬路。couldn’t不能，不會(huì)；wouldn’t不愿意；mustn’t禁止，不要；needn’t不需要，不必。6．D解析：D【詳解】句意：——高中入學(xué)考試快到了! ——是的，我們老師告訴我們考試時(shí)再怎么仔細(xì)都不為過。mustn’t禁止；shouldn’t不應(yīng)該；needn’t不必；can’t不能。7．C解析：C【詳解】句意：我們不應(yīng)該從大樓上扔任何物體?？疾榍閼B(tài)動(dòng)詞辨析。根據(jù)“Even a small object…cause serious injuries or death,when dropped from a great height”可知，從高空中掉落一個(gè)小的物體都有可能造成傷害或死亡，表示可能性用may，故選C?？疾榍閼B(tài)動(dòng)詞辨析。根據(jù)but轉(zhuǎn)折可知有規(guī)律的鍛煉才對(duì)身體有幫助，故用must表示一定，必須。9．A解析：A【詳解】句意：——我真的有必要帶著口罩去購(gòu)物嗎？——恐怕在公共場(chǎng)合你必須如此?？疾榍閼B(tài)動(dòng)詞。根據(jù)“It is not only to protect yourself but also to protect others.”可知在公共場(chǎng)合必須戴口罩。10．D解析：D【詳解】句意：當(dāng)你參觀博物館時(shí)，應(yīng)該注意一些說明，我們最好不違反它們。“some instructions”和“pay attention to”屬于被動(dòng)關(guān)系，所以第一個(gè)空用“should be paid attention to”結(jié)構(gòu)，所以排除A、B；had better not do/be意為“最好不做某事”；against“反對(duì)”，介詞，所以第二個(gè)空用動(dòng)詞短語be against “反對(duì)”。11．D解析：D【詳解】句意：——我們一定要今天完成嗎？——是的，你們必須?？疾榍閼B(tài)動(dòng)詞辨析。根據(jù)“Today is the last day.”可知，必須今天完成，故選D。考查情態(tài)