— I’m afraid I can’t you, sir. Can you speak more slowly?
— Of course.
| A．follow | B．listen | C．see | D．find |
The street is so dirty that we can see litter ________.
A. everywhere B. somewhere C. nowhere
-- Thank you for giving me so much help!
-- ________
A. It’s a pleasure.
B. It doesn’t matter.
C. It’s fun.
The air pollution is serious, ________ we must try our best to reduce it.
A. so B. or C. if
--The river used to be clean. How does it become dirty?
-- There are many factories ________ waste water into it.
A. pouring B. pour C. poured
-- ________ Why don’t you clean your room?
-- Sorry, I’ll do it right away.
A. Take it easy.
B. What a mess!
C. Don’t worry.