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
19. --- Jane got good results in all her school subjects this term.
---So she did. She studies______in our class.
A .hard B.hardest C. bad D. worst
