题目

 We have eight managers in our company, and five of _____ are in their twenties.    A. them          B. whom        C. who              D. which 答案： A。此句为并列句，由连词and连接两个分句，第二个分句应使用them作介词宾语。He finished _____ his book last month, and now he is planning _____ another new one. [     ]A. writing; writing  B. to write; to write C. writing; to write  D. to write; writing