Shoppers were much more likely ________ ( buy) a product advertised on TV by someone ________(try) i

　　9. Shoppers were much more likely ________ ( buy) a product advertised on TV by someone ________(try) it at the time.

　　【答案解析】to buy; trying句意：购物者更可能购买电视上现场尝试者所做广告的产品。be likely to do sth.为固定搭配，第一空填to buy; 第二空填trying，trying it at the time修饰someone。

　　10. Clearly and thoughtfully________(write)，the book inspires confidence in students who wish to seek their own answers.

　　【答案解析】written　句意：这本书脉络清晰，论述深刻，能够激发那些自主探究答案的学生的自信心。book与write之间为被动关系，因此填write的过去分词形式。

　　11. There are a lot of things you can do ________(help) children sold by human traders ________(return) to their natural parents.

　　【答案解析】to help; (to) return句意：你可以做许多事情帮助被人贩子卖掉的儿童回到父母的身边。分析句子结构，第一空填to help,表目的;help sb.(to) do sth.为固定搭配，第二空填(to) return。

　　12. Father’s Day, ________ (observe) on March 19 since Middle Age, means ________(honor) fathers and celebrating fatherhood.

　　【答案解析】observed; hono(u)ring句意：父亲节意味着对父亲的尊重和对父亲身份的庆祝，自中世纪以来人们在每年的3月19日庆祝它。根据句意可知父亲节被庆祝，observed on...补充说明Father’s Day;meandoing sth.为固定搭配，意为“意味着做某事”，第二空填hono(u)ring。