—Can I pay the bill by check?
—Sorry，sir．But it's the management rules of our hotel that payment be made in cash．
| A．shall | B．need | C．will | D．can |
Once again he didn’t hand in his homework _____ he had been given enough time to do it．
| A．in case | B．as though | C．so that | D．even though |
--- They live on a busy road．
--- There ______ be a lot of noise from the traffic．
| A．must | B．may | C．would | D．could |
_____ the chapter four times, I finally understood the author's theory．
| A．Reading | B．Having read | C．To read | D．Read |
．Don’t you think it is unfair for about two thirds of the population to have no_____ to health care?
| A．access | B．basis | C．entrance | D．guarantee |
．The conference aims to develop business and let people think about ______ they can have a positive influence on the planet．
| A．why | B．that | C．what | D．how |