-- Perhaps Tom’s not in.
-- ________. Look, the light’s on.
| A．Yes, he can be at home | B．No, he mustn’t go out |
| C．Yes, he must be at home | D．No, he needn’t go out |
We don’t permit _______in the classroom; that is to say, students aren’t permitted ________in the classroom.
| A．to smoke; to smoke | B．smoking; smoking |
| C．smoking; to smoke | D．to smoke; smoking |
It was on October 3, 2011 _____ a big fire happened in Beijing, _____ was a great shock to lots of people.
| A．when; that | B．that; when |
| C．when; which | D．that; which |
When he entered the hall, he found the big desk ______with flowers and many people ______at him kindly.
| A．covering, staring | B．covered, stared |
| C．covered, staring | D．covering, stared |
Is this the reason _______she explained in the report for her success in the job?
| A．what | B．that | C．how | D．why |
The heavy fog in London made ______deep impression on us, which was sometimes so heavy that we lost _______sight of everything around us.
| A．a; the | B．a; 不填 |
| C．the; the | D．the;不填 |