| A．Excuse me. | B．It doesn't matter. | C．I'm sorry. |
| A．It's time to play sports. | B．It's time to go out to play. | C．It's time to play the violin. |
| A．Do you like planting trees? | B．Would you like to plant trees with us? |
| C．Shall we cut down some trees? | |
| A．You shouldn't swim in the river. | B．You have to swim in the river. |
| C．Why not swim in the river? | |
| A．Why do you go on a picnic? | B．Where shall we go on a picnic? |
| C．How about going on a picnic? | |
| A．to go | B．go to | C．going |
| A．plays the guitar | B．play the violin | C．play the football |
| A．make the air dirty | B．pick flowers | C．help the animals |
| A．more | B．too many | C．too much |
| A．healthy | B．weak | C．happy |
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