A total of 4,017 questionnaires were properly 20 by the respondents.
答案：(C) filled out
fill out 意為「填寫（表格、問卷）」：共有 4,017 份問卷被受訪者確實填妥；taken in（吸收、受騙）、given off（散發）、picked on（找碴）語意都不合。
答對率 35%。
fill 你認得「填滿」，但 fill out 這個片語動詞若沒特別記過，在四個都以 out／in／off／on 結尾的選項裡就分不出來。fill out ＝ 填寫表格，是生活中極常用的說法：Please fill out this form.（請填寫這張表格）。英式英文常說 fill in，兩者意思相同。
主詞是 4,017 questionnaires（問卷），問卷能被「怎麼樣」？當然是被填寫。副詞 properly（確實地、正確地）也在配合——properly filled out 是「填寫完整無誤」的固定說法。
take in 是「吸收、理解」，也有「欺騙」的意思（be taken in by a scam 被騙）；give off 是「散發（氣味、光）」；pick on 是「找某人碴、欺負」。
fill out／fill in a form（填寫表格）、hand in（繳交）、take in（吸收、受騙）、give off（散發）、pick on sb（找某人碴）。
The Internet has replaced books as a major source of information for Taiwanese primary school students, according to a recent survey. The survey was conducted last December, and it 16 that 77 percent of the students considered the Internet to be the most convenient source of information. 14 percent of the respondents said they often 17 books for information instead of going online. Of all the students surveyed, 27 percent said they had never used the 18.
The survey randomly selected 4,200 students in 26 primary schools in 19 parts of Taiwan to investigate their reading habits. A total of 4,017 questionnaires were properly 20 by the respondents.
According to the survey, five percent of the school children indicated that they did not read any 21 reading materials. Of those who read such materials, 25 percent liked to read comics, 20 percent fables and stories, 15 percent books on natural sciences, and 12.3 percent books on technology. The survey 22 indicated that 45 percent of the school children read at least five books every month; 23 45 percent of them read less than three per month.