用所给词的适当形式填空
（1） (certainly) plants don't grow well in this country.
（2）My friend is a very (understand) person.
（3）The boy left without (say) a word.
（4）The bread (make) is made in China.
（5）She could not give him a (true) answer.
（6）You can have the book for 120 (cent).
（7）Can we give away these (toy)?
（8）How long has his son (have) his bike?
（9）Miss Liu bought two (scarf). One was white and the other was red.
（10）The old man (live) in the village since he came to China.
（11）—Who have you decided (go) to America with?
—I will go there with my parents.