[題目] 文法問題

[minray (烏龜)]

    各位大大...
    以下題目是我從網路download來的.(答案也不知正不正確)
    可是看了答案還是不知道為什麼..
    能否幫忙小弟解個惑. 感謝~~


01.The habit of traveling long distance to work __ for the past decades
   due to the availability of car.
A)is B)was C)has grown D)had been
ANS:B

Q.C似乎還比較好解釋

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02.__ a country's food become rich,the disease of poverty are replaced by
those of civilization.
A)Whereas B)As C)Even though D)Unless
ANS:A

Q. 感覺B比較順...

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03.The Noation Recycling Coalition recently __ Congress to pass tax incentives
that would encourage ....
A)call over B)call for C)called on
ANS:B

Q. C似乎比較正確..至少他是過去式 :p

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04.If the earth __ warmer each year, the earth would become a dead planet.
A)will get B)wuold get C)gets D)were to get
ANS:D

Q. 感覺c比較順...哎呀.我都是靠感覺走..



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◆ From: 59.121.129.245
推 assassin88  :Q2.這裡是要表轉折語氣，"儘管"生活富裕....
→ assassin88  :Q3.call for有要求、需要的意思，called on是呼籲。
推 nnf         :Q1 Q2我真的也不懂..@@"
→ nnf         :Q4是假設語氣 be going to get變成were to get
→ nnf         :假設語氣以過去形態表示