—Can I pay the bill by check?
—Sorry, sir．But it is the management rules of our hotel that payment _____be made in cash．
| A．need | B．will | C．shall | D．can |
As a matter of fact, ________ matters most in learning English is enough practice.
| A．where | B．why |
| C．which | D．what |
Good food, good sleep, no exercise. That's ________ he gained weight.
| A．how | B．when |
| C．what | D．whether |
It gives his life a flying start ________ he has gone abroad for further education.
| A．what | B．when |
| C．that | D．how |
The Super Girl Wang Bei's death highlights the fact ________ cosmetic surgery has become one of China's biggest beauty secrets.
| A．that | B．where |
| C．what | D．which |
Sometimes, ________ we show our gratitude for a person is reflected in the kind of food we serve him or her.
| A．when | B．whether |
| C．why | D．how |