My mother is always warning me when I go out, “Don’t get off the bus ____ it is stopping.”
| A．until | B．before | C．while | D．after |
——May I put my luggage on the seat beside you, sir?——____.
| A．Sure, with pleasure | B．Okay, please yourself |
| C．Well, never mind | D．Yes, help yourself |
There was something wrong with the network, or the e-mail____ earlier.
| A．could have been sent | B．might be sent |
| C．need have been sent | D．must be sent |
I’d rather have a room of my own, however small it is, than _____one with others.
| A．share | B．sharing | C．to have shared | D．to share |
_______ she was invited to the ball made her very happy.
| A．Whether | B．Because | C．What | D．That |
Tom was over there. His red clothes stood out clearly _____the snow.
| A．behind | B．for | C．against | D．beyond |