1. eat/ enjoy/ you shouldn't / you / much/ can/ you/ the food/ but/ too/ have.
You can enjoy the food you have but you shouldn't eat too much.
2. can't/ the piano/ Nhung. sister/ play/ and/ her/ either/ can't
Nhung can't play the piano and her sister can't, either.
3. went/ she/ stomachache/ the doctor's / an/ Lan / because/ awful/ to had
Lan went to the doctor's because she to had an awful stomachache.
4. have/ the farm/ often/ them. vegetables/ from/ dirt. on.
Vegetables from the farm often have dirt on them.