He made up his mind to devote his life_______ pollution_______ happily.
| A．to prevent; from live |
| B．to prevent; from living |
| C．to preventing; from living |
| D．to preventing; to live |
— I always feel a little nervous when I talk to the headmaster.
— ______ . She is strict, but she’s also kind to her students.
| A．What a pity | B．Take it easy |
| C．So do I | D．That’s right |
______ may have a chance to be successful if he tries his best.
| A．Everybody | B．Nobody |
| C．Somebody | D．None |
You will fall behind the others ______ you start to work hard.
| A．since | B．if | C．until | D．unless |
— Excuse me. Is the museum open all day long?
— ______ , only from 9:00am to 5:00pm.
| A．Sorry, I’m not sure | B．Sorry, I’m afraid not |
| C．Yes, you’re right | D．I think so |
The student ______ his homework and handed it to the teacher.
| A．took out | B．came out |
| C．put out | D．went out |