V. Choose the word/ phrase (A, B, C or D) that best fits the space in each sentence. (2.5 pts)
1. The weather is becoming hotter; ______________, children go swimming a lot.
A. so B. therefore C. because D. however
2. A clean, safe form of energy which comes from the sun is___________________.
A. fossil fuel B. panels C. solar energy D. nuclear power
3. Please remember to all the lights and fans before leaving the room.
A. switch on B. look up C. give up D. turn off
4. It’s possible to solar energy for a number of days.
A. store B. keep C. install D. place