1. We shall appreciate ____ from you soon.
A. being heard B. hearing C. to hear D. having been heard
【答案】B。appreciate+doing：“感谢，欣赏”。此处hear from sb：从……收到来信，应该用主动语态，后面的sb.是hear from的宾语，故A,C和D项不对。
2. Don’t risk ___ the job which so many people want.
A. losing B. to lose C. lost D. your life to lose
3. The scientist didn’t mind_____ and went on with his investigation.
A. laughing at B. to be laughed at
C. being laughed at D. laughed at
【答案】C mind doing sth.“介意”是固定搭配;而此处科学家是被嘲笑的对象，是“介意被嘲笑”，所以选被动式C项being laughed at.
4. John suggested ____ anything about it until they found out more facts.
A. not to say B. saying not C. to say not D. not saying
【答案】D suggest后面只能用 doing,不能用to do,否定副词not的位置应该在doing之前。
5. I really appreciate ________ to relax with you on this nice island.
A. to have had time B. having time
C. to have time D. to having time