---In recent years, _____ problem of global warming has been very serious.
---That’s right. People are facing ____ number of natural disasters now.
| A. the; a |
B. a; the |
C. a; a |
D. the; the |
—Does he like tea or coffee?—Sorry. I don’t know ______ he prefers.
| A．which | B．that | C．how | D．what |
_______, a learned man makes fewer mistakes in life than a man without knowledge.
| A．In general | B．As general |
| C．On general | D．At general |
“It’s raining too heavily at this moment,” said the old woman, ________ out of the window.
| A．to look | B．looking |
| C．having looked | D．looked |
It is very ______ that she will ring me tonight.
| A．likely | B．possibly |
| C．probably | D．perhaps |
—I’m afraid I have to leave for New York tomorrow.
—_____
| A．I’m afraid not. |
| B．Have a good journey. |
| C．Please do. |
| D．Why not go now? |