用动词的适当形式填空; 1. ______ (not frighten) the boy. He’s much younger than you. You should ______ (be) friendly to him. 2. If you want ______ (be) healthy, you need ______ (do) some exercise every day. 3. There is nothing ______ (do) right now. I suggest ______ (go) ______ (boat). 4. Look! It’s all white outside. Everything ______ (cover) with snow. 5. Babies are not easy ______ (look) after. 6. I want to get a pet. Do you have any suggestions? What about ______ (get) a dog? 7. I like ______ (watch) my dog ______ (play) around. I often teach him _____ (play) different tricks. 8. Yesterday I _____(forget) ______ (bring) my homework to school. So I ______ (have) to get back ______ (get) it. 9. Thank you for ______ (help) ______ (put) out the fire.