8. She’d love to go to the birthday party, but she had to ____________ the baby in the evening.

A. turn on                B. switch off                C. look after                 D. turn off

9. Mr. Johnson, ____________ has a lot of teaching experience, will join the school in September.

A. who                 B. which                C. that                        D. whom

10. Mr. Bean enjoys ____________ the Internet in his free time.

A. to surf                B. surfing                C. surf                        D. to surfing