(1). Most people are free to enjoy themselves in the evening and on weekends.
(2) Some spend their time watching television,listening to the radio,or going to movies: other participates in sports.
(3) It depends on their interest.
(4) There are various ways to spend one's free time.
27. Which sentence contains the main idea?
(1) keep your tree outdoors until the day before Christmas.
(2) Never use lighted candles.
(3) There are also other suggestions for avoiding a Christmas fire.
(4) Turn off the lights before you leave the house abd throw away the tree by New Year's Day.
28. Which sentence contains the main idea?
(1)plants,which grow in the desert,have long root systems.
These roots quickly soak up whatever water is available.
(2) Desert plants are not like other plants,which have thin leaves and lose most of the moisture sent up from the roots.
(3) The thick leaves of the desert plants store water for use in the desert parts of the year.
(4) Those are ways,in which desert plants get and store water.
29. Which sentence contains the main idea?
(1) Two days ago, I experienced one of the most terrible days of my life.
(2) Early in the morning,my car wouldn't start,so I was late to work.
Later that day,around lunch time,I lost my briefcase.
(3) That that evening at dinner,my dog decided to join the Foreign Legion.
(4) I think I'll move to the South Pole.