For each question, combine two sentences using the First Conditional or Second Conditional.

We should turn off the lights when we aren’t using them. We save electricity.

→ .............................

For each question, combine two sentences using the First Conditional or Second Conditional.

Chemical fertilizers are a major cause of soil and water pollution, but we can’t stop using them.

→ If we.............................

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

What is the main idea of the passage?