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100

I studied Spain for 5 years in high school.

I studied Spanish for 5 years in high school.

100

In order to degree she has to do a stage.

In order to graduate she has to do an internship.

100

My sister came back from 2 months trip in Spain.

My sister came back from a 2-month trip to Spain.

100

All people ask for him my degree.

Everyone asks him about my degree.

100

You have to know well the language.

You have to know the language well.

200

We don't feel us sure in the house anymore after the robbery.

We don't feel safe in the house anymore.

200

When I was listening Miguel who spoken Italian, it happened.

When I was listening to Miguel who was speaking Italian, it happened.

200

You have to look into the computer.

You have to look at the computer.

200

The honey don't have problems with cold or warm.

The honey don't have problems with the cold or warm.

200

I went to the India in 1967.

I went to the India in 1967 No 'the'..

300

I have been in the United States since a year.

I have been in the United States since a year. 'for a year'.

300

I used to having a horse.

I used to have a horse.

300

I am not used to do the housework.

....used to doing...

300

I hate doing mistakes.

....making mistakes...

300

I'm used to get up early.  

..used to getting...

400

I live here since 1997

...have lived here....

400

Spinach is said to being very good for your health.

..is said to be very....

400

It's time I have a holiday: I am so tired!

....it's time I had...

400

At the end, I was able to finish my homework.

IN the end

400

I love a lot the animals that live in Australia.

 'a lot' at the end.

500

We are twelve in my English class.

There are twelve people in my English class. 

500

When I was in Italy last year, I wish I went to Florence.

....I wish I had gone to....

500

I wish I am not poor.  

...wish I was not..

500

She must has been on holiday.

...must have been...

500

The sun is very strong. I wish I didn't leave my sun cream in the hotel. 

....wish I hadn't left...