单项选择题
A.turn over B.turn up C.turn on D.turn down
One day while Mr. King was working, he had a(an)（）and h...
单项选择题One day while Mr. King was working, he had a(an)（）and his left leg was badly injured.
A.business B.accident C.matter D.event
It is assumed that students at an intermediate level wi...
单项选择题It is assumed that students at an intermediate level will have a good（）of the basic structures and vocabulary of English.
A.command B.commanding C.to command D.commanded
I am pleased to take（）to exchange views with you.A.this...
单项选择题I am pleased to take（）to exchange views with you.
A.this opportunity B.a chance C.this time D.aperiod
