当你在餐厅要买单时, 可以对服务员这样说：
______________________
当你想建议同学晚上早睡时, 可以这样说：
______________________is a good habit.
当你不确定是否有时间参加朋友的聚会时, 可以这样说：
______________________if I have time for the party.
当你想鼓励落选的朋友再试一下时, 可以这样说：
______________________
假如你是Darren, 接电话时可以这样说：
Hello, ______________________.
Many homes have cameras to protect them from danger.1..But the cameras do not know whether the person is a family member, a friend, a postman or a criminal(罪犯).
But a new camera made by a French company can recognize(辨别出)faces. It can tell parents at work that their children have returned from school, or that the mail has been sent to their home.
2..When family members enter a home, the smart camera "recognizes" them and sends information to the owner's phone. The owner can choose to see the video then or later.
3., the camera will send a waning sound on the owner's phone.
This is what happened recently to a smart home camera owner named Damien. He lives in Paris.
"On a Friday I was at work, having a big monthly meeting when my phone moved. At first I told myself4., but my phone was telling me there was a face that the camera did not recognize. Something was happening in my house! "
"I saw a person I did not know with his shoes on, which is not allowed in my apartment. I watched it on the video.5..I hurried back home as fast as possible and called the police on the way. Thanks to the smart camera, the criminal was caught soon, "said Damien.
A.But if an unknown person enters a home
B.I felt quite surprised
C.The cameras can tell the owners if someone has entered
D.Oh, it must be a wrong wan
E.It can also tell them if a stranger has entered their home
