Question

1.Someone ____________ (knock) at

the door.

2.Good boys ____________ (obey)

their elders.

3.Water ____________ (boil) at

100°C.

4.Birds ____________ (fly) in the

air.​

Answer 1

Answer:

1. someone is knocking at the door .

2. good boys obey their parents .

3. water boils at 100° C.

4.Birds are flying in the air.

Answer 2

Answer:

1.Someone knock at the door.

2.Good boys obey their elders.

3.Water boil at 100:C.

4.Birds fly in the air.

I hope its help you!