. Probability is the mathematical study of the _____ of an event's occurrence.
| A．desire | B．likelihood | C．result | D．effect |
The water was very hot, she put it near the open window to ____ for a few minutes.
| A．burst | B．warm | C．fade | D．cool |
Because the shop _______, the T-shirts are sold at half price.
| A．has closed down | B．closed down | C．is closing down | D．had closed down |
—What will you be doing at 4:00 tomorrow afternoon?
—I _____ in my office.
| A．will be typing | B．am typing | C．am about to type | D．will type |
— When can I see you, Mr Black? Three o’clock this afternoon?
— Oh, no. I ________ a meeting then.
| A．will have | B．will be having | C．am having | D．have |
Wait till you are more ________. It’s better to be sure than sorry.
| A．alternative | B．satisfied | C．optimistic | D．certain |