They considered ______ a computer, which was considered ________ a great help in their work.
| A．to buy; to be | B．buying; being | C．to buy; being | D．buying; to be |
You’d better______, or you may be cheated by your so-called net friends.
| A．go over | B．go out |
| C．watch over | D．watch out |
It was in Beijing _______Chinese President Xi JinPing held a 4-hour meeting with U.S. Vice President Joe Biden on December 5, 2013.
| A．where | B．which | C．that | D．when |
There is growing _____ among the public about the safety of school buses after many accidents.
| A．experience | B．chance |
| C．concern | D．purpose |
It is believed that this book is _______ worth reading than that one.
| A．more | B．better | C．quite | D．most |
Mark has _____ good command of English. Therefore, he plays _____very important part in our team.
| A．/; a | B．/; the |
| C．a; a | D．a; the |