第I卷选择题（共84分）
I.单项填空（本题共16小题，每小题1分，共16分）
从各题所给的四个选项中，选出可以填入空白处的最佳选项。
1--- Where is Mary? ---I don’t know. She________ be at home.
A.might B.would C.could D.need
2 There will ______________tomor row evening .
A probably be rainy B probably be rain C may rain D might be rain
3 Walk down Zhongshan Road ______________you reach the end
A before B after C while D until
