1. A .................. is a device that converts sunlight into electricity. A. solar panel B. solar energy C. solar system D. solar power

10. Scotland is famous for its .................... castles, historical sights and amazing scenery. A. old-fashioned B. powerful C. driverless D. ancient

5. People often think Santa Claus and pine trees are the .................... of Christmas. A. symbols B. performance C. parade D. decorations

8. You .................... not cross the road when the trafic light is red. It's dangerous. A. must B. can't C. shouldn't D. should

2. Which ............... of transport do you think will be used in the future? A. mean B. means C. meaning D. meanings

11. I'm afraid I .................... able to attend your workshop tomorrow. A. isn't B. won't be C. wasn't D. weren't

4. At the moment, scientists ................ to generate electricity from alternative energy sources with the lowest cost. A. are trying B. is trying C. will try

14. Yesterday, Tom .................. his finger when he sliced the bread. He lost a lot of blood. A. cuffed B. didn't cut C. was cutting D. cut

6. "Why is it called a .................... source?" - "Because it can be replaced easily and quickly." A. non-renewable B. effective C. renewable D. specific

7. While I .................... my homework, my sister .................... newspapers. A. are doing/ is reading B. am doing/ are reading C. is doing/ are reading D. am doing/ is reading

9. Not many people went to see the film; ...................., it received good reviews from critics. A. but B. because C. however D. although

16. When the energy comes from water, we call it .................. energy A. solar B. hydro C. natural D. wave