动名词作主语和宾语 — 英语填空题
题目
用所给动词的适当形式填空（每空限填一词）：1. ___ (swim) in the river alone is dangerous. 2. My cousin enjoys ___ (read) novels before going to bed. 3. ___ (keep) a diary every day helps you improve your writing. 4. Would you mind ___ (close) the window? It's too cold outside.