To be

Russia..... one of the largest countries in the world.

• is

• am

• are

• was

Budi … watching TV when somebody knocked the door yesterday.

• Is

• am

• are

• was

My friend and I … Indonesian.

• is

• am

• are

• was

I met Tomi when he … attending a party.

• is

• am

• are

• was

Mathematics … the most difficult subject.

• is

• am

• are

• was

The police … catching those robbers right now.

• is

• am

• are

• was

She … to the store when she realized she forgot her wallet.

• is going

• goes

• went

• was going

My brother … his homework before going out to play.

• is finishing

• finished

• finishes

• was finishing

The cat … on the windowsill when it started raining.

• is sitting

• sits

• sat

• was sitting

The old women … having lunch when the robbery happened.

• is

• am

• are

• were