The room is empty except for a bookshelf _____ in one corner.
| A．standing | B．to stand | C．stands | D．stood |
— How did you do in your essay?
— I got ______ okay grade, but Mr. Jones gave Sarah top marks. She’s ______ teacher’s pet, you know.
| A．不填; a | B．an; 不填 |
| C．不填; the | D．an; a |
They had to ______ the meeting because the organizers didn’t prepare the hall well, where people can share their opinions.
| A．put off | B．take off | C．put up | D．take up |
— You seem busy these days.
— Yes. I’m writing a story. You know, it’s really not easy to write ______ with attractive plots.
| A．this | B．it | C．one | D．that |
— How often do you go shopping online?
— Only sometimes, not ______.
| A．similarly | B．frequently |
| C．completely | D．immediately |
The students were playing football happily on the playground ______ it began to rain heavily.
| A．as | B．while | C．when | D．Suddenly |