More and more people choose to shop in a supermarket as it offers a great ____ of goods.
| A．expression | B．mixture | C．variety | D．combination |
You’d better book the tickets in advance；________ we may miss the chance to enjoy the concert performed by the pop star.
A．however B．otherwise C therefore D．nevertheless
She was scared _______ when hearing the sound of explosion.
| A．to death | B．death | C．of death | D．with death |
Most parents are not __________ the danger of their babies’ eating jelly, which causes most unfortunate incidents to happen.
| A．well aware to | B．very aware of | C．aware that | D．well aware of |
Don’t turn the room __________, as I have just tidied it.
A. inside B upside down C. outside D. inside down
Many people _____ the opening ceremony of 2010 World Expo, which was so amazing.
| A．witnessed | B．participated | C．swallowed | D．handled |