. So many uses have been discovered for this wood ____ the supply of white pine is becoming smaller and smaller.
| A．then | B．what | C．that | D．which |
—Did you look up the time of the high-speed trains to Shanghai?
—Yes, the early train is to leave at 5:30 a.m.
| A．likely | B．possible | C．due | D．about |
Doctors strongly recommended that my father more exercise regularly instead of sitting still before a computer all day long.
| A．takes | B．take | C．took | D．had taken |
The more one is _______ the English-speaking environment, the better he or she will learn the language.
| A．exposed to | B．filled in | C．caught on | D．kept up |
—I’m afraid I can’t finish the book within this week.
—Don’t worry. .
| A．Please go ahead | B．That’s right | C．Not at all | D．Take your time |
According to a UN report，one third of the world population have no to clean drinking water and health care.
| A．means | B．approach | C．channel | D．access |