It knowledge is power, ____Sir Francis Bacon wrote in 1579, ____ perhaps creativity ca be described as the ability to use that power.
| A．what; and | B．as; then | C．which; and | D．that; then |
Ladies and gentlemen, please fasten your seat belts. The plane _______.
| A．takes off | B．is taking off |
| C．has taken off | D．took off |
I _______ in London for many years, but I’ve never regretted my final decision to move back to China.
| A．lived | B．was living |
| C．have lived | D．had lived |
I was giving a talk to a large group of people, the same talk I _______ to half a dozen other groups.
| A．was giving | B．am giving |
| C．had given | D．have given |
“You’ve left the light on.” “Oh, so I have. _____ and turn it off.”
| A．I’ll go | B．I’ve gone |
| C．I go | D．I’m going |
He has changed a lot. He _______ not what he _______.
| A．is, is | B．was, was |
| C．is, was | D．was, is |