Put the following into indirect speech 1)the teacher said to us; ''you will have to work hard tomorrow'' 2)my girlfriend said to me ; ''i shall not be able to go fora walk with you today,because i am very busy'' 3)she said to me; ''how long are you going to stay in the country? '' 4)he said to me ; ''i like to go the canteen during the break'' 5)he asked me ; ''when will you go to the canteen? ''

1) The teacher told us that we would have to work hard the next day.
2) My girlfriend told me that she would not be able to go for a walk with me beacuse she was very busy that day.
3) She asked me how long I was going to stay in the country.
4) He told me that he liked* to go to the canteen during the break.
5) He asked me when I would go to the canteen. 

liked* - в данном случае допустимо оставить глагол like без изменения в том случае, если он несёт информацию, которая является истинной и по сей момент. Другими словами, если "ему" нравилось тогда и нравится сейчас ходить в столовую во время перерыва, то в косвенной речи мы можем оставить like.