Present Simple, Present Continuous, Past Simple, Past Continuous

Yesterday my uncle (repair) the car while I (do) my homework.

• was repairing, was doing

• repaired, did

• repairs, am doing

• repaired, was doing

Answer explanation

two actions in progress happening at the same time in the past (Past Continuous)

Water (boil) at 100 degrees Celsius.

• is boiling

• boils

Answer explanation

We use Present Simple for universal facts, truths

What were you doing when the accident happened?

• past action in progress which was interrupted by a short action

• two past actions in progress happening at the same time in the past

• a habit in the past

• temporary action happening around the time of speaking

Jane is a very polite girl, she's just being rude and nervous because of her exams these days.

• Jane is always rude and nervous

• Jane became polite because of her exams

• Jane became nervous and rude because she's having exams soon

• Jane is impolite because she doesn't respect anyone

Answer explanation

Normally Jane is polite, but now she is nervous. It's a temporary action happening around the time of speaking.

Your socks are all over the apartment! You are always being untidy!

the speaker feels...

• happy about the socks

• irritated, annoyed

• sad, disappointed

Answer explanation

Present Continuous is used to express annoyance.

I (study) tenses now!

• am stydying

• study

• studied

• was studying

I (attend) our university conference next Friday

• am attending

• attend

• was attending

• attended

Answer explanation

It's a future plan, Present Continuous is used

Viktor (not/pass) his exam last year.

• wasn't passing

• didn't pass

• wasn't pass

Answer explanation

It's a finishd action in the past. Past Simple is used

This battle took place on August 12, 1399

• fact in the past

• universal fact, truth

• action in progress at a definite time in the past

Answer explanation

Date - fact in the past. Past Simple is used

I (see) a doctor tomorrow, this headache is unbearable!

• am seeing

• see

Answer explanation

= visit, meet

Present Continuous can be used as it is not a state verb