When I swim in the river, I I’m a fish.

Catherine telephoned to the airport to ______ whether Flight 24 for San Francisco is departing on time.[ ]

Never give up. If you keep practicing speaking English every day. you’ll make great progress.—Thanks for encouraging me. I know .

Would you like to drink some juice –Thanks. But________. I have drunk a lotof tea.

If there aren’t so many cars, our air would be much ____.