It is widely accepted that young babies learn to do things because certain acts lead to________.
| A．rewards |
| B．prizes |
| C．awards |
| D．results |
--How was your weekend, Rose?
--Awful! This was the first time I ________ alone at home, bored to death.
| A．had left | B．had been left | C．have been left | D．have been leaving |
Many citizens urged their government to take measures to _______ their carbon emission to reduce greenhouse effects.
| A．cut off | B．cut up | C．cut out | D．cut down |
Obama made _______ history by being elected as ________ first black president of the US.
| A．不填；the | B．a; the | C．a; a | D．the; a |
--I think our school’s selective courses are of great use and I have learnt a lot from them.
--Yes _______.
| A．No problem | B．I couldn’t agree with you more |
| C．I don’t think so | D．It doesn’t matter |
I was born in New Orleans, Louisiana, a city _______ name will create a picture of beautiful trees and green grass in our mind.
| A．which | B．of which | C．that | D．whose |