听音，选出句子中所含有的字母或单词。
( )（1）A. BEC B. BDC C. DBC
( )（2）A. efi B. ife C. ifg
( )（3）A. father B. brother C. mother
( )（4）A. family B. funny C. really
( )（5）A. come in B. come on C. welcome
( )（6）A. dad B. dog C. duck
( )（7）A. mom B. man C. me
( )（8）A. grandpa B. grandma C. grandmother
( )（9）A. great B. green C. grandpa
( )（10）A. she B. he C. we