136、be busy doing sth 忙于做某事
例句：She is busy preparing for the exam and doesn't have time to go out with us.
她忙于筹备考试，没时间和大家出去。
137、a piece of cake 一块蛋糕;比较容易做到的事
例句：Completing this task is a piece of cake for him.
对他来讲，完成这个任务就像吃一块蛋糕一样容易。
138、call back 回电话
例句：I'll call you back later.
我稍后会给你回电话。
139、call off 取消
例句：Due to the weather, they decided to call off the game today.
因为天气缘由，他们决定取消今天的比赛。
140、call on / upon 号召;需要
例句：The government calls on citizens to obey traffic rules.
政府号召公民遵守交通规则。
141、call up 打电话给
例句：I'll call you up later.
我稍后会给你打电话。
142、make a call 打电话
例句：Can you make a call to my friend for me, please?
请帮我打个电话给我的朋友怎么样?
143、answer a call 接电话
例句：Can you answer the call for me, please?
请帮我接一下电话怎么样?
144、a summer camp 夏令营
例句：This summer, I attended an English summer camp.
今年夏季，我参加了一个英语夏令营。
145、Can I help you? / What can I do for you? 我能为你效劳吗?
例句：Hello, can I help you? / What can I do for you?
你好，有哪些需要我帮忙的吗?
146、take care 注意，当心
例句：Take care when you go out.
外出时请小心。
147、take care of 照顾，照料
例句：I will take care of your pet.
我会照顾好你的宠物的。
148、care about sth 注意
例句：You should care about your health.
你需要注意你的健康。
149、care about sb 关心;关怀
例句：She cares deeply about her friends.
她很关心她的朋友。
150、care for 照顾;照料
例句：She cares for her younger brother at home.
她在家照顾她的弟弟。
