* Complete the following sentences with the words given
18. Yesterday/ it/take/my mother/ more than/an hour/ go/ her office.
=>...........................................................................................................................................
19. Many people/ not/ appprove/ using/ nuclear power/ because it/ very dangerous.
=>...............................................................................................................................................
20. We/ trying/ find/ cheap/ clean/ effective/ sources/ energy.
=>...............................................................................................................................................
18. Yesterday, it took my mother more than an hour to go to her office.
19. Many people don't approve of using nuclear power because it is very dangerous.
20. We are trying to find cheap, clean, and effective sources of energy.