---Have you ever traveled abroad?
---Sure. I____ in a small town in the USA with my grandparents.

-- Drugs have done great harm to some people and their families.
--Quite true, so we should ________ them.

---How can I improve my reading?
---I think the most important is to ______ a good habit of reading.

—________is a boat ticket for children?
—How old is your child? It’s free for kids under three years old.

Wearing white can help people _______when they feel stressed.

Traffic is heavy and the price of oil is much ______ so that many people go to work by bus instead.

—Where is your uncle?
—He _____ to South Africa on business. He has ______ there twice.

—There _______ a factory here, but now it has changed into a big supermarket.
— You are so lucky to live here.