1. A. wanted B. filled C. stayed D. played 2. A. ahead B. seat C. instead D. bread 3. A. left B. center C. e

1. A. wanted      B. filled      C. stayed      D. played
2. A. ahead      B. seat      C. instead      D. bread
3. A. left      B. center      C. enter      D. frighten
II. Find the words which has a different stress pattern
1. A. different      B. dangerous
    C. pollution      D. plentiful
2. A. environment      B. petroleum
    C. effectively      D. fashionable
III. Choose the correct option A, B, C or D to complete the sentences
1. Solar energy __________ by many countries in the world in the future.
   A. use      B. will use
   C. will be using      D. will be used
2. __________ is a renewable sourse.
   A. Coal      B. Oil
   C. Wind      D. Gas
3. You can wear a __________ on your back to fly anywhere easily in the future.
   A. jet pack      B. flying car
   C. teleporter      D. high-speed bicycle
4. In the future, most people will travel __________ flying train.
   A. in      B. at
   C. on      D. at
5. Do you think we __________ driverless car in the future?
   A. use      B. to use
   C. will use      D. have used
6. That picture is __________
   A. us      B. ours
   C. our      D. we
7. ___________ is a single-wheel bike.
   A. Monowheel      B. Hover scooter
   C. Segwey      D. Teleporter
8. Nuclear energy can provide electricity for the world needs, but it is __________
   A. cheap      B. unlimited
   C. dangerous      D. safe
9. You can ___________easily on the Dead Sea. Why? – Because it’s so salty
   A. fly      B. walk
   C. drive      D. float
10. Biogas helps solve the problem of indoor ___________.
   A. noise pollution      B. air pollution
   C. water pollution      D. soil pollution