I my cousins yesterday and we had fun together.
---The mid-exam is coming. I have some trouble with my lessons. ---Don’t worry. I think I can give you some suggestions ________.
---Have you heard of Earth Day? --- Yes, We have only one Earth. We have no choice but ________ it.
---Could you tell me ______?--- By searching the Internet.
--- I really don’t know how ________ this problem.--- Let me see.
--- Excuse me, when and where will the next Olympic Games take place?--- The 31st Olympic Games _______ in Rio de Janeiro, the capital of Brazil in 2016.