根据下列各句句意和空白之后的汉语提示词，写出对应单词的正确形式，每空只写一词。
小题1:The little boy is ____________ (谦虚).
小题2:They ____________ (克服)a lot of difficulties last year.
小题3:Our army is well ____________ (装备).  
小题4:His____________ (面部的)expression looked very serious.
小题5:He ____________ (对准，聚焦)his camera on the building in the distance.
小题6:Her ____________ (主修科目)is French.
小题7:The naughty boy ____________ (解释) the reason why he was late for school.
小题8:Smoking has a ____________ (有害的) effect on our health.
小题9:The films are suitable for____________ (成年人)only.
小题10:What did she ____________ (低语)in your ear?