1. Nam and Mai arrived late , so they missed the most important part of the festival
- Nam and Mai missed ....
2. Although the water in the river is polluted , the children go swimming
- The water in .......
3. It is not necessary for you to make careful prepartions for the festival
- You don not ........
1. Nam and Mai arrived late , so they missed the most important part of the festival
- Nam and Mai missed .the most important part of the festival because they arrived late...
2. Although the water in the river is polluted , the children go swimming
- The water in ..the river is polluted but the children go swimming.....
3. It is not necessary for you to make careful prepartions for the festival
- You do not .....need to make careful prepartions for the festival...
1. Nam and Mai arrived late , so they missed the most important part of the festival
- Nam and Mai missed ....the most important part of the festival because they arrived late
2. Although the water in the river is polluted , the children go swimming
- The water in .......the river is polluted but the children go swimming
3. It is not necessary for you to make careful prepartions for the festival
- You don not ........have to make careful prepartions for the festival
1. Nam and Mai arrived late , so they missed the most important part of the festival
- Nam and Mai missed the most important part of the festival because of their late arrival.
2. Although the water in the river is polluted , the children go swimming
- The water in the river is polluted, but the children go swimming.
3. It is not necessary for you to make careful prepartions for the festival
- You don not need/ have to make careful preparations for the festival.