选词填空(可变换形式,其中有两项是多余的)
9. It
________________ the rules of the school to smoke on campus.
10. When starting the machine,
________________ listed in the instructions for use.
11. The doctor told the patient to
________________ deeply and then
________________.
12. We have no idea how to persuade him to
________________ smoking.
13. You’d better
________________ the things you need before going shopping.
14. The president has announced his retirement, but has not
________________.
15. He has been playing all afternoon
________________ doing his homework.
16. Across the street from me there are
____________ police officers standing guard.
17. Li Hua got scolded(责备) by his teacher, for he
________________ his notebooks in the exam.
18. The cafe owner has
________________ the required “no smoking” signs, but thinks his responsibility stops there.