第一节 单项选择（共10小题；每小题1分,满分10分）
从16~25各题所给的A、B、C和D项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
16. --- When did this moving story happened？
--- It happened ______ the morning of March 3rd..
A. in B. at C. on D. till
17. The driving license exam is difficult. I don’t think ___can pass it.
A . everybody B. nobody C. somebody D. anybody
18. --- Can I take my camera into the museum？
---I’m sorry. You ______put it here before entering.
A. must B. should C. can D. may
