The air_______ of Shenzhen in February ranked the 10th among 74major cities in China. A. quarter B. quality C. quantity
I think playing football is _______than _________ TV. A healthier , watching B. healthier ,watch C .more healthy, watching D. more healthy , watch.
There are over twenty ________ visitors visiting the park.
He is getting ________ to hear the ________ words.
This problem is ________ that one.
________ animals are in danger and there will be ________ space for them if we don’t take any actions.