Question

【題目】You’d better wash your hands before meals you healthy.

A. keepB. keptC. keepingD. to keep

Answer 1

【答案】D

【解析】

句意：你最好飯前洗手來保持健康。根據句子結構可知用不定式作狀語；keep動詞原形，kept過去式，keeping動名詞或現在分詞，to keep不定式結構；故選D。