When I was at school, I _____ up very late, reading storybooks.
| A．used to stay | B．was used to stay |
| C．used to staying | D．am used to staying |
________ our great joy, it never rained during the trip.
| A．By | B．To | C．In | D．On |
On no account ________ to our plan for the picnic.
| A．she will agree | B．agree she will | C．will she agree | D．will agree she |
Unfortunately, when I arrived she ________, so we had only time for a few words.
| A．just left | B．had just left | C．has just left | D．was just leaving |
_______ two exams to worry about, I have to work really hard this weekend.
| A．Besides | B．With | C．As for | D．because of |
The tickets are________ for 5 days only.
| A．favorite | B．available | C．convenient | D．familiar |