天气预报说有雨，你最好带一把伞。
The weather report says it will rain. You ________ take an umbrella.
我认为没必要每天都花那么多时间写博客。
I _______ necessary ________so much time writing blogs every day.
我不仅会说英语，而且会说法语。
I can English French．
为了过低碳生活，我将继续骑车上下班。
In order to live a low-carbon life, I will ______ bikes to and from work.
有时候，宠物可以帮人做点家务。
Sometimes a pet can ________ some housework.
你最好给我留下你的电子邮箱。
You _______ leave me your e-mail address.
