| —Have you been to your hometown this year? —Yes, and it has changed a lot ________. |
A. last year B. in the last few years C. that year D. in the next year |
| —Practicing conversations with others is _____ useful way to learn English well. —Yes, and it can improve our speaking skills. |
A. a B. an C. the D. / |
| When I was walking in the street yesterday, I saw a UFO _____ over my head. |
A. flying B. flies C. flew D. to fly |
| —It smells terrible. What has happened here? —Look, there is much waste gas _____ from the chemical factory. |
A. pour B. pouring C. poured D. pours |
| —Would you mind playing computer games with me? —Sorry, I have _______ playing them. |
A. looked up B. put up C. given up D. made up |
| —Have you finished your homework? —Not _____. There are still some exercises to be done. |
A. already B. yet C. just D. ever |
| _____ the environment is important for human beings. |
A. Take care of B. Taking care of C. Took care of D. Take the care of |