Because of too many differences between the two sides, a lot of questions are still left ________.A in the air B on the air C by the air D through the air
_____ I believe,and you will find him very capable.
_____ more than 100 million references to the word“tuhao” on social media since early September.
一You seem to be familiar with this city. 一I_____ here for three years.It’s great to be back.
The so-called Asia—Pacific century will make no sense_____ China develops.
Whether you like it or not,we live in a community_____ on--line chatting is an important part of communication.