A．Warned; followed

B．Warning; following

C．Having warned; following

D．Having been warned; following

答案与解析：D　本题考查分词作状语having been warned of danger; 现在分词独立结构with a friend following her.

6．More and more people choose to shop in the supermarket, for they are especially interested in the________of goods on offer.

A．price B．variety

C．value D．amount

答案与解析：B　根据句意可判断答案是B项：variety n. 种类。

7．And you find that you're not to be________with a position of real responsibility.

A．offered B．trusted

C．furnished D．retained

答案与解析：B　trust sb. with sth. 把某事托付给某人：I can't trust him with my car.(我不能把我的车托付给他。)本题译文：你认为不会把真正有责任的工作托付给你。

8．Mr. Smith drove his car to the nursery, ________ his daughter and ________ back home straight.

A．picked up; drove

B．picked up; driving

C．picking up; drove

D．to pick up; driving

答案与解析：A　此题考查由and连接的并列的谓语动词，表示动作先后发生。

9．________what would happen, I was shocked at the result.

A．I didn't expect

B．Having not expected

C．I had not expected

D．Not having expected

答案与解析：D　本题考查现在分词短语作原因状语，故可排除A, C两项；现在分词的否定式是在整个分词前加否定词not、never等，故B项错误。

10．As I will be away for at least a year, I'd appreciate________from you now and then.

A．to hear B．heard

C．hearing D．having heard

答案与解析：C　appreciate后不能接动词不定式，可接名词或动名词；动名词一般式表示现在或将来要发生的行为动作，而动名词完成式表示过去已经发生的行为动作。hear from的行为尚未发生，故用hearing。

11. Hearing the bad news that her mother was knocked over, the poor girl ________ crying.

A. burst out B. broke up

C. burst into D. broke into

答案与解析：A　考查动词短语的用法。burst out doing sth."突然开始......"；burst into＋名词(如laughter，tears)"突然开始......"；burst out crying＝burst into tears。故选A项。

12. I regretted ________ her that I was afraid not to go to her party.

A. to have told B. that I had told

C. to tell D. having told