grammar 'is' and 'are'

The dog ___________ barking.

• is

• are

• am

.......... these your shoes?

• Am

• Is

• Are

The students ......... in room 215.

• am

• is

• are

My sister ___________ playing with her doll.

• is

• are

• am

They .......... at work.

• am

• is

• are

You ......... nine now.

• am

• is

• are

I __________ helping my mother in the kitchen.

• is

• are

• am

She ... not feeling well because she has catch a flu.

• is

• does

• do

• be

We .......... from Estonia.

• am

• is

• are

Sorry, I ........ late.

• am

• is

• are