witty tips

[mostafa ali zaki]

The reason for my question is that there are many choose sentences put these words in the same sentence like for example in senior
1- In some countries, children ................ wear school uniform.
a) don't need to b) needn't
2-We .................... give our homework to the teacher until next week.
a) needn't b)don't have to
thanks for your quik response. really you are very helpful.