1. I am considering ___my job as I’m not getting on well with my boss.

　　A. changing B. to change C. changed D. to be changed

　　【答案】A consider后邊接動名詞做賓語，表“思考做某事”;consider sb./sth. to do表“以為”。因而A為準確答案。本句的意思是：“我正在思考換作業，由于我和老板聯系不太好。”如：We are considering learning a foreign language.咱們正在思考學一門外語。

　　2. Charles Babbage is generally considered ______ the first computers.

　　A. to invent B. inventing C. to have invented D. having invented

　　【答案】C此題考察的對錯謂語動詞中不定式的用法。Be considered/said/ believed to do 表明：據以為/聽說/據信任做……，然后邊的動作若現已發作，則用完結時表明，故選to have invented.

　　3. Mary regretted ___ to John’s birthday party last Sunday.

　　A. not going B. not to go C. not having been going D. not to be going

　　【答案】A。regret后邊要跟動名詞做賓語，動名詞的否定式是在動名詞之前直接加not。

　　4. I regret _______ you that we are unable to offer you a job.

　　A. in forming B. having informed C. to inform D. to informing

　　【答案】C。regret to do sth.惋惜做某事。我很惋惜的通知你咱們不能給你這份作業。

　　5. In some parts of London, missing a bus means _______ for another hour.

　　A. waiting B. to wait C. wait D. to be waiting

　　【答案】A。means doing意味著。在倫敦的某些當地，錯失汽車意味著再等一個小時。

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