_____ great efforts, we failed to carry our plans through, which made us very disappointed.
| A．In place of | B．Instead of | C．In case of | D．In spite of |
The scientist does not study nature ________ it is useful to do so. He studies it because he takes pleasure in it.
| A．until | B．though |
| C．because | D．Unless |
You are hardworking and surely most of you _____ a college admission notice by the end of September this year．
| A．will receive |
| B．will be receiving |
| C．will be received |
| D．will have received |
I _____ through the hard time but for my teacher’s generous and timely help．
| A．couldn’t have gone | B．could go |
| C．mustn’t have gone | D．hadn’t gone |
The class teacher was anxious to hear one of his top students _____ because of family move．
| A．will leave | B．is leaving |
| C．was leaving | D．has left |
With the exam ______ in ten minutes, they were asked to hand in their mobile phones．
| A．taken place | B．taking place |
| C．having taken place | D．to take place |