Do you have any ideas ______ Mom’s birthday? 你對媽媽的生日有任何想法嗎? a. in b. to c. at d. for Explanation 介系詞for在此處的意思是「在(某一個場合或時間)」,Mom’s birthday(媽媽的生日)是一個指定的時間,故選for,正確答案為D。 Chinese translation After leaving this page, need to use 1 more coin to play audio Sorry! You don't have enough coins.