Tom __________ in the library every night over the last three months.
| A．works | B．worked |
| C．has been working | D．had been working |
_____ you are my best friend, I’ll tell you the secret, but it is only between you and me.
| A．Because of | B．According to | C．Now that | D．As if |
In order to finish the experiment successfully, the professor always _________, for every day the light in his room didn’t go out until 4 a.m.
| A．mixed up | B．cleaned up | C．turned up | D．stayed up |
“I don’t think it’s my ________ that the TV blew up (爆炸). I just turned it on, that’s all,” said the boy.
| A．error | B．mistake | C．fault | D．duty |
You’d better cut your hair short. Our school doesn’t __________ long hair.
| A．approve of students wearing | B．approve students to wear |
| C．approve students wearing | D．approve of students to wear |
― How do you like your English professor?
― He has lots of interesting _______ abroad, and in a word, he is a teacher of rich
_________.
experiences, experiencesB. experience, experience
C. experiences, experienceD. experience, experiences