The law about banning using thin plastic bags came into_____from 1st Jane this year.
| A．existence | B．power | C．sight | D．effect |
17. I didn’t get into the two-hour quarrel; I know how it ______, though.
| A．would break out | B．has broken out | C．was breaking out | D．had broken out |
16.It is no doubt that once ____ this city, you’ll find that there is so much surprise waiting for you to discover.
visit B. visiting C. visited D. to visit
15. _____ U2, the Irish rock band from Dublin perform a concert in Beijing, tell me in advance.
| A．If | B．Shall | C．Should | D．Would |
14. —Can’t you read the sign, sir? No parking here!
—_____.
| A．You’re welcome | B．Go ahead | C．Pardon me | D．Thanks, anyway |
13. They only say such unkind things about you out of ____ envy, because you are ____ success as a writer.
| A．the; a | B．the; / | C．/; a | D．/; / |