________ more tourists, travel agencies from both China and the DPRK have developed a package of new products.
| A．Attracting | B．Attracted |
| C．To attract | D．Having attracted |
Jack doesn’t smoke now, but he _______ for almost twenty years.
| A．was smoking | B．had smoked | C．has smoked | D．smoked |
The manager says he really can’t ______to wait another day, because he is so busy.
| A．afford | B．waste | C．spend | D．cost |
______ of danger in the street at night, she had to go home, with a friend _____ her.
| A．Warned ; accompanied | B．Warning; accompanying |
| C．Having warned; accompanied | D．Having been warned; accompanying |
Privatecarsarerequiredtotaketurnsoffroadsoneoutoffive weekdays___thetrafficpressure.
| A．relieve | B．relieving | C．torelieve | D．relieve |
_______ I accept the gift or refuse it is none of your business.
| A．If | B．Whether | C．Even if | D．No matter when |