Question

UST (used to express necessity) 1.
You must improve your spelling. 2.
She must do her work properly. 3.
We must not purchase what is not necessary. 4
You must learn English in 4 months. 5
Must I not do my duty. ? 6
Why must you not pay the bill ?7
You must change your pen.​

Answer 1

Answer:

you will improve your spelling

she will do her work properly

we shall not purchase what is not necessary

you will learn english in 4 months

shall I not do my duty ?

why will you not pay the bill ?

you will change your pen