— Amy, your room is so clean and tidy.
— Thanks. It’s a good habit to ______ the things after using them.
| A．put on | B．put up | C．put away | D．put out |
------ What a nice motorbike! How long have you ______ it?
------ About half a year.
A. had B. receive C. bought
There are several chemical factories ______ waste water into the river.
A. pours B. pour C. pouring
Jim has been to the Great Wall before, ______ he?
A. has B. does C. hasn’t
The city has improved a lot _________ I came here a few years ago.
A. sinceB. forC. when
The weather in summer here is cooler than ______ in Beijing.
A. this B. that C. it