用括号内所给的动词完成短文，必要时可加助动词或情态动词。

     I have a friend(1)_____(call)Tom. He is an English boy. Now he(2)_____(1ive)in Yangzhou with my family. Tom

(3)_____(not know)Chinese, but he is learning it. He often(4)_____(speak)Chinese to my parents. Irle and his Chinese

friends, but sometimes we don't understand him because he isn't good at it yet. It(5)_____(be) a Sunday morning. Tom

(6)_____(go)out. He wanted(7)_____(buy)a Walkman. He walked along the street. He(8)_____(look)for a shopping

mall, but he didn't knew where(9)_____(go). Luckily, a girl helped him (10)_____(find)the mall. He was very happy and

bought a nice Walkman.

1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____

凡以硅酸盐水泥熟料和适量石膏磨细制成的以7d抗压强度表示强度等级的水硬性胶凝材料称为快硬硅酸盐水泥，简称快硬水泥。