【正文】
in D. in。 at 四、按要求完成下列各題 16. What does your uncle do? (改為同義句 ) ________ your uncle’s ________ ? 17. Bob’s sister is a teacher. (對畫線部分提問 ) ________is Bob’s________ ________ ? 18. This is Betty’s father and this is Betty39。 at C. on。s mother.( 合并成一句 ) ________ ________Betty’s________ . 19. These are actors.(改為單數句子 ) ________ ________ ________ actor. 20