What         will global warming(全球变暖) bring us? Scientists have given us a clear list.

My parents had to sell the old house for my further study abroad even though it wastheir own wishes.

---Seems no one knows _____ what happened to Malaysia Airline Flight 370.---It’s really sad, hope more and more resources will be offered in the search.

Be quick, __________ you’ll be late for school.

Show your ID card, ________ you won’t buy the ticket.