Viết lại câu từ gợi ý sau: The house is so large that they can't paint it in a week

1.The house is so large that they can't paint it in a week 
=> if the house.........
2. Tam does not feel happy because he can't go with us 
=> If Tam...........
3. The rain is very heavy. That's why we can't come on time 
=> if the rain...