11- Today is Friday when I usually practise my hobby through the internet. Today morning. I found some important information that made me very proud to be Egyptian, For example, I found that the toothpaste is an Egyptian invention. The ancient Egyptians cleaned their teeth using toothpaste which they made from salt and plants. They also studied the sun and the stars carefully to measure the days in a year. Then they invented the calendar and taught us to tell the time accurately with a water clock.

a. Answer the following questions:

1. What is the writer's hobby ?

2. How did the ancient Egyptians tell us the time accurately ?

b. Choose the correct answer from a , b , c or d:

3. The ……………. helps us know the days of the year.

a. hobby b. calendar c. clock d. water clock

4. The writer usually practises his hobby.........................

a. in the morning b. on Fridays c. in the afternoon d. in the evening

5. The ancient Egyptians cleaned their teeth using..........................

a. a calendar b. toothpaste c. salt d. plants