题目内容
In the last twenty years, seven Canadian scientists _____ the Nobel prize!
| A．won | B．had won | C．was winning | D．have won |
D
解析试题分析：考查时态：句意：在过去的20年中，7个加拿大科学家获得了诺贝尔奖。时间状语是. In the last twenty years,一般和现在完成时连用，选D。
考点：考查时态
Ever since Daming graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company.
| A．worked | B．has been working | C．is working | D．works |
A poet and artist ______ coming to speak to us about Chinese literature and painting tomorrow afternoon.
| A．is | B．are | C．was | D．Were |
This is the second time that you ______ the Summer Palace.
| A．visited | B．have visited | C．had visited | D．are visiting |
I ______ to send him a gift to congratulate him on his marriage, but I _____ it.
| A．hoped; hadn’t managed | B．hoped; didn’t manage |
| C．hope; don’t manage | D．had hoped; didn’t manage |
—Ouch! You hurt me.
—I’m sorry. But I _____ any harm. I _____ to drive a rat out.
| A．don’t’ mean; am trying | B．didn’t mean; tried |
| C．haven’t meant; tried | D．didn’t mean; was trying |
---I’m sorry, but there is no smoking on this flight.
---Oh, I _____that. Sorry, I won’t again.
| A．don’t know | B．didn’t know | C．won’t know | D．haven’t known |
The job proved to be much more difficult than I______.
| A．expect | B．expected | C．wouldexpect | D．hadexpected |
Mary said they _____________________with each other for six years before they got married.
| A．has fallen in love | B．had fallen in love | C．had been in love | D．has been in love |