______ their service, the workers of the hotel are active in learning English.
| A．Improving | B．To improve | C．Improve | D．Having improved |
Dick is over sixty, but he looks young for his age. He is always full of ______.
| A．energy | B．power |
| C．strength | D．force |
—It is said that there ____ be a big disaster in the town in five years.
—Nobody ______ tell exactly what will happen in the future.
| A．may; can | B．may; may |
| C．should; may | D．can; should |
—May I smoke here?
—If you ____, choose a seat in the smoking section.
| A．should | B．could | C．may | D．must |
Have you prepared for the sports meeting which _____ soon?
| A．has taken place | B．will be taken place |
| C．is to take place | D．is to be taken place |
A big party will be held _______ those foreign leaders who will visit our city next week.
| A．in memory of | B．in honor of |
| C．in search of | D．in charge of |