OG文法問題 - 自學

1. Battery-operated reading lamps___very well right now.
A.sale B.sold C. are selling C. were sold
為什麼答案是C?題不是被動嗎?

句子改錯?
2. The years I A.(spent) working with the children's home B.(was) the
most C.(rewarding) of D.my life.
答案為什麼是B.was?C.rewarding為什麼沒有錯?
rewarding是形容詞,後面怎能加of...整句話覺得很多地方都怪怪的

3. benefit可以數嗎?要用much 還是many?

4. A.(Effective) immediately, Craig Wu B.(will be) the new branch
C.(manaement of) the Mottsboro D.(division).
答案是C,我知道C錯在哪裡..可是A這樣文法放在句首總覺得怪怪的

5.A.(Perhaps) Mr.Rhenquist is not B.(quite) as well qualified for
the position C.(as) Mr.Robbins D.(does).
答案是D..可是為什麼?

6. Revitalization of the transportation system A.(would) be a
major B.(victor) for Glenville, which is showing signs of recovering
C.(following) years of D.(economic) decline.
這題我選C,但是答案是 B..為什麼是B?


我的問題有點多..希望各位高手可以幫我解答一下..非常感謝

--