----I am looking for information on social safety.----You can take this book. Social safety is _______ introduced in it

---Why does Tom’s mother ask him to drink milk? ---She says it’s         drink., and it’s good for his          .

---Can you tell me something about Liu Yang?---Oh, she _____ the first Chinese woman astronaut to get into space.

—________ does it take to go to Hangzhou from Wenzhou by train?—It usually takes about three hours.

The cake is very             .I’d like some more.