1.I have a lot of books, half of ________ novels.

A. which  B. that   C. whom  D. them

答案：D。

解析：half of them novels 為獨立主格結構，相當于 and half of them are novels。

2. ________ more and more forests destroyed, many animals are facing the danger of dying out.

A. because   B. as   C. With   D. Since

答案：C。

解析：考查“with + 名詞 + 過去分詞”結構。 

3. The bus was crowded with passengers going home from market, most of ________ carrying heavy bags and baskets full of fruit and vegetables they had bought there.

A. them   B. who   C. whom   D. which

答案： A。

解析：most of them carrying...為獨立主格結構，相當于 and most of them were carrying...，也可改為：most of whom were carrying。注意改動后連詞 and 的使用和動詞 were的使用。

4. The largest collection ever found in England was one of about 200,000 silver pennies, all of ________ over 600 years old.

A. which   B. that   C. them   D. it

答案：C。

解析：all of them over 600 years old 為獨立主格結構，相當于 and all of them are over 600 years old。 

5. The cave ________ very dark, he lit some candles ________ light.

A. was; given    B. was; to give

C. being; given    D. being; to give

答案；D。

解析：第一空填 being，構成獨立主格結構;第二空填不定式表目的。