–That’s very kind _________you _________me.
------ 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. since B. for C. when
The weather in summer here is cooler than ______ in Beijing.A. this B. that C. it