People are advised not to smoke at home, since passive smoking is ________ to people around them. Which is Not proper for the blank?
| A．dangerous | B．protective | C．hazardous | D．Risky |
American Indians ________ about five percent of the U.S. population .
| A．fill up | B．bring up | C．make up | D．set up |
When I get puzzled about some difficult problems, my teacher always encourages me and says, “Take it _________ .”
| A．for granted | B．serious | C．simple | D．easy |
After he retired from office, Rogers ________ painting for a while, but soon lost interest.
| A．took up | B．saved up | C．kept up | D．drew up |
In the dark forests ____ , some large enough to hold several English towns.
| A．stand many lakes | B．lie many lakes | C．many lakes lie | D．many lakes stand |
—The last one ____ pays the meal.
—Agreed!
| A．arrived | B．arrives | C．to arrive | D．arriving |