第一部分:英语知识运用(共2节,满分30分)第一节:单项填空(共10小题;每小题1分,满分10分)The classroom is so dirty. _________ we clean it?
The reason__________ their failure you know is they didn't get fully prepared for the experiment.
--Why has he been staying at home these days? --He ___________ since a month ago.
The president of the country was well_________ of when he was in power.
The gas tank____________ twenty gallons of gas, but now it may____________ only three gallons.
Mr. Smith__________ the roll of film as soon as he arrived home