She is a crazy fan of this singer. ________ she listens to his songs hundreds of times, she will never get tired.
| A．If | B．Unless ． | C．As long as ． | D．Even if |
It has been proved that taking exercise ________ does good to one’s health.
| A．mostly | B．formally | C．regularly | D．publicly |
how she was helping to save the environment, she said that she always takes
public transportation.
| A．To be asked | B．Asking | C．Being asked | D．Asked |
——What about lesson this morning?
——A piece of cake；it was too easy lesson for me.
| A．the；the | B．a；a | C．a；the | D．the；a |
mankind
| A．machine | B．bank | C．rank | D．language |
master
| A．perfect | B．prisoner | C．servant | D．merchant |