What does AS mean in these sentences:

1. He work as a poilot.

2. You mustn't about so loudly as you'll wake up the baby.

3. As we were listening to the radio, someone knocked at the door.

Write these sentences again using MUST or HAVE TO in place of the words in italics.

Vd: it is necessary FOR YOU TO work hard .

You must (or' have to) work hard

1. It will be necessary FOR YOU TO see a doctor.

2. Is it necessary FOR YOU TO make so much noise?

3. She said IT WOULD BE NECESSARY FOR US TO stay here.

4. IT WAS NECESSARY FOR HIM TO go out last night.

5. IT IS NECESSARY FOR ME TO have some help.

Use the correct form of the word given in each sentences

1. Farmers often............ their soil by adding fertilizers. ( rich)

2. My grandparents live............ at the age of 70 (health)

3. .............. made different styles of jeans to match the s' fashions.(design)

4. It was ........... of him to let the door open. (Care)

5. It would be more ........to switch the machine off at night.(Economy)