The drivers on the highway have to stop because the thick fog makes ____difficult to see. A,them B,it C,that D,this
A new gymnasium ______ in the south of the city next month, where we will hold a sports meeting.
-Mr Zhang, you ______ a good rest after the hard work. -Thank you!
There goes the bell and the children are walking out of the classroom ______.
-Who will be ______our class when Mr Liugoes to Beijing for further education? -Mrs Zhao.
Teachers will never be ____ by computers in the classroom though the Internet is popular.