Complete the following sentences.

1. Fibers that are obtained from either plants or animals ………………… natural fibers.

a) called
b) are called
c) are calling

2. ………………… things in their proper places makes a house look tidy.

a) Keeping
b) To keep

3. We ………………… cotton clothes in the summer because they ………………us cool.

a) wear, are keeping
b) wear, keep
c) are wearing, are keeping

4. A house should have large and airy windows ………………… sunlight in.

a) to let
b) to letting

5. Clothes ………………….. us from heat, cold, rain or insect bites.

a) protect
b) protects
c) are protecting

6. The process ……………………… a liquid changes into a solid on cooling is called freezing.

a) which
b) by which
c) with which

7. Liquids …………………… a definite shape.

a) not have
b) do not have
c) does not have

Answers

1. Fibers that are obtained from either plants or animals are called natural fibers.

2. Keeping things in their proper places makes a house look tidy.

3. We wear cotton clothes in the summer because they keep us cool.

4. A house should have large and airy windows to let sunlight in.

5. Clothes protect us from heat, cold, rain or insect bites.

6. The process by which a liquid changes into a solid on cooling is called freezing.

7. Liquids do not have a definite shape.