Ⅰ.单句语法填空
1．It is reported that thirty people were killed in a collision (collide) on the railway yesterday.
2．The society today offers the young generation more chances to show off their talents and skills.
3．Mr Collins undertook to_look (look) after the children so that his wife could go to the club with two of her friends.
4．How come you look so thin these days?
5．While crossing the street, he was knocked down/over by a car.
6．Chinese acrobatic (杂技) has a long history which can date back to more than 2,000 years ago.
7．She likes to keep up with the latest fashions.
8．All I seem to do is cook, wash and pick up the kids.
