Page 473 - Grammar Explorer 2 - demo

UNIT 16 Review the Grammar

Charts 1 Circle all correct answers. Sometimes both answers are correct.
16.1–16.7
1. I don’t know when / whether the expedition left.

2. It is a fact that / why exploration is often a dangerous activity.

3. The explorer said, “I’ve found the city”. / the city.”

4. I think / I’m not sure if the mission was a success.

5. I believe / I believe that the report is true.

6. The clerk said / told the tickets were sold out.

7. Do you know if / how this machine works?

8. Can you tell me if / whether or not the train is on time?

9. Are you glad why / that you came back?

10. We asked / asked them whether they had a good vacation.

Charts 2 LISTEN & WRITE.
16.1–2,
16.5–16.7 A Look at the photo and read the caption. Then listen to two people talk about the Hang Son
Doong caves in Vietnam. Choose the correct answers.
CD4-31
1. a. Brad said the pictures were fantastic.

b. Brad asked Sylvie what she thought of the pictures.

2. a. Sylvie asked what was so special about the caves.
b. Sylvie asked if the caves were special.

3. a. Brad asked if the caves were the largest anywhere.

b. Brad said the caves formed the largest cave system anywhere.

A caver explores the
Hang Son Doong cave
system in Vietnam.

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