Ⅰ.单句语法填空
1. He was wandering in the street when he________(catch) sight of his former boss.
答案： caught
2．________(surround) by trees and flowers，our school looks very beautiful.
答案： Surrounded
3．All the work________(finish)，the workers left the factory.
答案： finished
4．When I study English，I like to put my dictionary________my reach so that I can refer to it when necessary.
答案： within
5．Tom_____________(chat) about the football match with his classmates when the headteacher came in.
答案： was chatting
