【正文】
用單數(shù)。25. Every possible means _____ to prevent the air pollution, but the sky is still not clear. A. is used B. are used C. has been used D. have been 39。used【答案】C。每種阻止空氣污染的可能的方法都嘗試過了,但是天空依然不是很明朗。當(dāng)用and 連接的名詞前面有each,every 等修飾時,謂語動詞用單數(shù)。26. One or perhaps more pages _______.A. is missing B. has been missed C. are missing D. was missing【答案】C。一頁或者更多頁找不到了。由or連接兩個并列主語時,根據(jù)就近原則決定謂語動詞的單復(fù)數(shù)。27. The manager or his assistant ______ planning to go.A. were B. are C. was D. be【答案】C。經(jīng)理或者他的助理,計劃去。由or連接兩個并列主語時,根據(jù)就近原則決定謂語動詞的單復(fù)數(shù)。28. Neither Tom nor his parents ______ at home.A. is B. are C. has D. was【答案】B。湯姆或者他的父母在家。由neither…nor…連接兩個并列主語時,根據(jù)就近原則決定謂語動詞的單復(fù)數(shù)。29. Either the dean or the principal ______ the meeting.A. attends B. attend C. are attending D. have attended【答案】A。院長或者校長在出席會議。由either…or…連接兩個并列主語時,根據(jù)就近原則決定謂語動詞的單復(fù)數(shù)。30. ______ was wrong.A. Not the teacher but the students B. Both the students and the teacherC. Neither the teacher not the students D. Not the students but the teacher【答案】D。不是學(xué)生,而是老師出了錯誤。由not…but…連接兩個并列主語時,根據(jù)就近原則決定謂語動詞的單復(fù)數(shù)。