Page 22 - Key to Social Studies 2 (Workbook)
P. 22
2 TIME TRAVEL
LESSON 5
1 Complete the sentences using the following words.
technology ancestors past emails
1. Our used firewood to cook.
2. has changed our world.
3. In the , there was no internet.
4. Letters are the old form of .
2 Put or .
1. Things have changed from the past to the present.
2. In the past, people did not have electric or gas stoves to cook
their food.
3. Long ago, there were computers and internet.
4. In the past, people communicated through emails.
3 Match.
1. In the past, there were no a. emails.
2. We can communicate easily through b. electric stoves.
3. We send letters through the c. computers.
4. Our ancestors didn’t have d. post office.
20
