Exercise 1: Find a mistake in each following sentence and correct it.

  Question 1: Henry would rather that his girlfriend work in the same department as he does.

  Question 2: It is a recommendation from a doctor that the patient stops smoking.

  Question 3: It is high time I had left for the airport.

  Question 4: It is important that we be talked about how developed countries have solved the urbanization problems and propose some solutions to those in Viet Nam.

  Question 5: Is it really necessary that we included new information in the conclusion?

  Question 6: It is recommended that the presentation were no more than 15 minutes.

  Question 7: I suggest that we focused on its advantages and disadvantages.

  Question 8: Our Geography teacher also advised that we will talk about issues that are familiar and important to our classmates.

  Question 9: It is important that he gets into a good university.

  Question 10: The teacher demanded that the classroom clean immediately.

  Question 11: It is vital that people allow to choose where to live.

  Question 12: She requested that everyone in my class attends her presentation.

  Question 13: It is crucial that urban people don’t look down on rural people.

  Question 14: Her parents insisted that she studies hard for GCSE.

  Question 15: The doctor suggested that his patient does not stop smoking.