The lost dog _____ early this morning.

A. find B. found C. is found D. was found

D 【解析】句意：今天一大早那只丟失的狗被找到了。根據(jù)early this morning可知此處用一般過(guò)去時(shí)，主語(yǔ)the lost dog與謂語(yǔ)find之間是被動(dòng)關(guān)系，故謂語(yǔ)用一般過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài)was found，故選D。

The room _____ every day.

A. must clean B. must be cleaning C. must be cleaned D. is cleaning

C 【解析】句意：每天那個(gè)房間一定被打掃。主語(yǔ)the room與謂語(yǔ)clean之間是被動(dòng)關(guān)系，故謂語(yǔ)用被動(dòng)語(yǔ)態(tài)，故選C。

His business is often_______. I hope he will have more ______at his business .

A. successful ; success B. success ; successful

C. succeed ; successful D. success ; succeed

A 【解析】句意：他的生意經(jīng)常成功。我希望他在事業(yè)上能取得更大的成功。success：成功，成就；勝利，不可數(shù)名詞；它的動(dòng)詞形式是succeed（成功）；它的形容詞是successful（成功的；一帆風(fēng)順的）。Be動(dòng)詞后一般跟形容詞作表語(yǔ)，故第1個(gè)空填形容詞successful；more更多的，much的比較級(jí)，形容詞，形容詞修飾名詞，可知后面填名詞；故填success。故選A。 ...

He has been away .

A. since a month B. for a month C. for a month ago D. in a month

B 【解析】試題分析：句意：他已經(jīng)離開(kāi)了一個(gè)月了。此題考查for+時(shí)間段，故選B。

Trees can help reduce air pollution . That’s true. __ , they can make the city cooler in hot summer .

A. However B. Therefore

C. Moreover D. Otherwise

C 【解析】句意：樹(shù)木有助于減少空氣污染。那是真的。此外，他們可以使城市在炎熱的夏天更涼爽。A. However（1）然而，表轉(zhuǎn)折關(guān)系，一般用逗號(hào)與主句隔開(kāi)；(2)不管怎樣，無(wú)論如何，引導(dǎo)一個(gè)讓步狀語(yǔ)從句，后直接跟形容詞或副詞；B. Therefore因此，表因果關(guān)系；C. Moreover此外，而且；補(bǔ)充說(shuō)明的及后面所補(bǔ)充的是并列關(guān)系。D. Otherwise否則，表轉(zhuǎn)折。本句是補(bǔ)充說(shuō)明前...

—Must I finish my homework today?

—No, you______ . You can finish it tomorrow.

A. can’t B. shouldn’t C. needn’t D. mustn’t

C 【解析】試題分析：句意：我今天必須完成我的作業(yè)嗎?——不，不必要。你可以明天完成。must的含義是必須一定，其否定形式mustn’t表示禁止的含義。故must的否定回答一般借助于needn’t和don’t have to來(lái)構(gòu)成，根據(jù)前文No,可知下文為否定回答，故答案選C。

—It’s so hot here . Do you mind _____the window ?.

—_____. I will do it right now .

A. to close ; Yes B. to open ; No

C. opening ; Of course not D. closing ; I hope so

C 【解析】試題分析：句意：----這兒是如此的熱，你介意打開(kāi)窗戶(hù)嗎？---當(dāng)然不，我立刻去做。固定句型Do you mind doing sth.表示你介意做某事嗎？Of course not當(dāng)然不；I hope so希望如此；根據(jù)題意，故選C。

We are going for a picnic tomorrow. I'll call Wendy to make sure_______.

A. why to start B. which to start C. what to start D. when to start

D 【解析】句意：我們明天要去野餐，我將會(huì)打電話(huà)給wendy來(lái)確定什么時(shí)候出發(fā)。A. why to start為什么出發(fā)；B. which to start哪一個(gè)出發(fā)；C. what to start什么出發(fā)；D. when to start何時(shí)出發(fā)。結(jié)合句意可知，答案為D。

I didn’t find out the answer _______ the end of the story.

A. in B. until C. when D. to

B 【解析】試題分析：句意：直到這個(gè)故事的最后我才發(fā)現(xiàn)這個(gè)答案。Not..until...表示直到……才。 A. In在……；B. Until直到……；C. When當(dāng)……時(shí)候；D. To到……；根據(jù)題意，故選B。

I would like to read the books_____history.

A. by B. with C. about D. for

C 【解析】句意：我想讀有關(guān)歷史的書(shū)。A. by通過(guò)…的方式，在…旁邊；B. with和，擁有，隨著，用某種工具；C. about關(guān)于；D. for為了，給，對(duì)于。這本書(shū)書(shū)是關(guān)于什么內(nèi)容，用about，故選C。