English tenses (past, present, future))

One day a man ___________ a horse.

• bought

• was buying

• was bought

The climate __________ rapidly. Who knows what it will be like in 50 years.

• is changing

• changes

• change

This is the first time I _________ sushi and I must say it's quite good!

• ate

• have eaten

• had eaten

You're always _________. It drives me crazy!

• work

• working

• works

After I __________ breakfast, I went outside to play with my friends.

• have eaten

• ate

• had eaten

I was eating when you ________ me.

• called

• were calling

• call

John _________ these e-mails for 4 hours.

• was writing

• wrote

• has been writing

While I _________ my homework, Tom ________ me a message.

• did

  send

• did

  sent

• was doing

  sent

I think he ________ his homework before he went out.

• had finished

• finished

• finishes

Did she _________ a lot?

• smoked

• used to smoke

• use to smoke