—Do you know what to do in the lab, Mike?
—Oh, sorry I don’t----just _____if I could get a ticket for the Shanghai Expo.
| A．wonder | B．wondered | C．wondering | D．having wondered |
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 |
There is no doubt that _________ a goal, one needs not only knowledge but also good personalities.
| A．achieve | B．achieving |
| C．to achieve | D．achieved |
Lyn gave up the chance of going abroad, but he feels he _________ a right decision.
| A．makes | B．has made | C．had made | D．is making |
It was the deep love and encouragement of my teammates_________ helped me gain the greatest strength and meet the challenges in life.
| A．what | B．which | C．who | D．that |
What makes tomorrow’s successful citizens_________ the ability to cope with a changing world as well as the responsibility towards community.
| A．is | B．are | C．has | D．have |