Page 151 - Grammar Explorer 2 - demo

3 DISCOVER. Complete the exercises to learn about the grammar in this lesson.
A Find these sentences in the article from exercise 1. Write the missing words.

1. Factories have used robots to build cars and other machines .

2. Nursing homes have used dogs and cats in pet therapy .

3. , the robot has found a place in

nursing homes around the world.
4. For example, nursing homes in Denmark have bought over a hundred Paro robots

.

B Look at the sentences in exercise A. Then choose the correct answer for each question.
Discuss your answers with your classmates and teacher.
1. Which word is used with a length of time? a. for b. since

2. Which word is used with a point in time? a. for b. since

Nursing homes in the Netherlands
have used robot pets since 2008.

UNIT 5 LeSSON 2 131
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