填入动词的适当形式。 1. Knives are used for _________ (cut) things. 2. Can you finish __________ (read) the book in three days? 3. The doctor was busy __________ (operate) on the boy at that time. 4. Stop _________ (talk) and listen to me carefully. 5. Thank you very much for _________ (help) us. 6. Granny is very ill and she doesn't feel like _________ (eat) anything. 7. The girl enjoys _________ (listen) to light music. 8. Do you remember _________ (buy) me a beautiful skirt on my 13th birthday? 9. We couldn't help _________ (laugh) after we heard the funny story. 10. What about __________ (go) out for a walk?