`3.` There are ten people in the room but there are only eight chairs to sit . `->` There aren't ________________________ `4.` My grandmother is very weak so she can't lift the box. `->` My grandmother is ___________________ `5.` The price of the house is very high . We can't buy it. `->` The price ____________________

3. There aren't enough chair for ten people to sit in the room

4. My grandmother is not strong enough to lift the box

- Weak(a)>< Strong(a) : Yếu><Khỏe

5. The price of the house is not low enough for us to buy it 

- Low ><High : Thấp ><Cao

- Đối với danh từ thì enough đứng ở đằng trước

- Đối với tính từ thì enough đứng ở đằng sau : S + be(not) + adj + enough + ( for sb ) + to V