Where is the grammatical error in this sentence? "The children is playing hide and seek together"

• The

• is

• and

• together

Be quiet, please. I am focusing ... the lesson.

• on

• at

• for

• in

She's ........ the performance at the moment.

• film

• filmed

• filming

• flims

Are you....that movie on TV tonight?

• watch

• watches

• going to watch

• will watch

Can you come ...our party?

• at

• in

• on

• to

She took the garbage .... the kitchen.

• off

• out of

• None of above is correct

• All of above are correct

....the environment is an important thing.

• Protect

• Protecting

• To protect

• Ptotected

Which room is ....?

• he

• she

• his

• her

.....from your house to the nearest bookstore? It's about 10 kilometers.

• Is it far

• Are they far

• How far is it

• How far are they

He is ..... person that I have ever met.

• the most funny

• the most funniest

• the funniest

• more funnier than