Frázová slovesa 17: KEEP

The sign said: ‘Danger! Keep ________!’

1. back
2. on
3. out
4. up

The reporter was sure that the spokesman was keeping something ________.

1. back
2. in
3. off
4. out

Everyone in my class is very good at maths. It's hard to keep ________.

1. at them
2. them off
3. them up
4. up with them

If you want to learn the piano, you have to practise every day and keep ________.

1. at it
2. it back
3. it off
4. on it

Mark, I need your help. I know it's late but I won't keep you ________ long.

1. back
2. in
3. off
4. up

We all thought that the lecture would finish at 4. However, the lecturer kept ________ talking for another 30 minutes.

1. at
2. on
3. out
4. up

We had a special net to keep ________ mosquitoes.

1. back
2. off
3. out
4. up

I really like your website. Keep ________ the good work!

1. in
2. off
3. up
4. up with

He was kept ________ at school one day last week, because he had been very rude to his teacher.

1. back
2. in
3. on
4. out

It's difficult for a teacher to keep students ________ cheating.

1. at
2. from
3. off
4. on