完形填空。 One day I go to my good friend Bruce's home. There are four people in his family. His parents 1 both English teachers. He 2 a little brother. 3 name is Peter. Peter is only five years old. He doesn't 4 to school. So he doesn't know how to read or write. I see Peter sitting at the table with a pen 5 his hand.'What are you doing, Peter?' I ask.'I'm writing 6 my friend, Bill.' says Peter.'But how 7 write?' asks Bruce.'You don't know the words, because (因为) you don't go to 8 '. With a smile, Peter says.'But it doesn't matter (没关 系)because my 9 and I know the words on the moon. I write to him in the moon language. It's easy (容易 的) for him to read my letter. I tell him an interesting story. I'm sure Bill will be 10 to read it.' What an interesting answer it is! (     )1. A. is (     )2. A. has (     )3. A. Her (     )4. A. go (     )5. A. on (     )6. A. in (     )7. A. you can (     )8. A. the party (     )9. A. brother (     )10. A. sad B. be B. have B. He's B. goes B. in B. with B. can you B. the zoo B. sister B. busy C. am C. is C. His C. to go C. to C. to C. you may C. school C. friend C. happy D. are D. are D. She's D. going D. from D. on D. may you D. his home D. teacher D. ill