根据所给词的适当形式填空。

1. How ________ (more) salt will you put in the dish? Only a little.

2. Tina__________(buy) some interesting souvenirs for kids on her trip to China.

3. I spent half an hour________ (make) a bottle of delicious apple smoothie. How happy I was.

4. Fifteen minutes is enough for you ________ (cut) up some tomatoes.

5. You need ________ (add) some red sugar to the soup. It's really strong!

6. Why not ________ (turn) off the TV? You have lots of homework to do.

7. Would you like some ________ (butter) on the bread?

8. He worries about ________ (get) there in time, because he doesn't have a bike.

9. It's easy for her ________  (work) out the math problems.

10. ________  (wait) for someone for a long time often makes me feel tired.