---Tina, I want to have a pet. How about a dog?--- I prefer a cat. It is ______ to take care of.
Look! There are many people on the beach. They are______ and happy.
Don’t go out. It _____ hard.
His friends go to Beidaihe by train _______vacation every year.
—How’s it going? ---______.
--I don’t know _____she is. --Mrs Smith says she is a shop assistant.