Shall we go shopping ______ Sunday? There is a big sale! 我們星期天要去購物嗎?有大特價! a. on b. at c. in d. of Explanation 本題測驗介系詞的用法。on作為時間介系詞使用時,一般用在星期或特定日期,如本句中的Sunday,故用on,正確答案為A。 Chinese translation After leaving this page, need to use 1 more coin to play audio Sorry! You don't have enough coins.