--- How did you pay the workers? --- As a rule, they were paid ______.
| A．by hour | B．by the hour | C．by hours | D．by an hour |
Rosy came in for _____coffee and told me _____ firecrackers outside kept her awake last night.
| A．a; the | B．不填; the | C．the; a | D．a; the |
—Now that I’ve finished my exams, I’m going to relax and go for a vocation tomorrow.
— _____! I’ve still got two finals to take.
| A．How nice | B．Lucky you |
| C．So far,so good | D．Good luck to you |
______ at the door before you enter my room, please.
| A．Knock | B．Knocking | C．Knocked | D．To knock |
Marry _____ as a secretary in this company for twenty years and now she stays at home taking care of her own garden.
| A．has served | B．had served |
| C．has been served | D．served |
_______ with care, one paper-bag will last for six weeks.
| A．Use | B．Using | C．Used | D．To use |