[فراج]

choose
d-off

a-performs
a-had to

c-mustn't

d-don't have to
a-must
b-had to
a-must

c-have to
d-must
a-have to
c-had to

c-mustn't
a-sleep
c-mustn't
d-had to
d-will have to
c-needn't
b-don't have to
b-needn't

b-don't have to
b-mustn't
a- should
c-have to
d must
c-away
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Dr zewail discovered the femto second (a discovery

Dr. Zewail made a discovery of the femto second
I bought a leather bag (made

I bought a bag made of leather.
lions feed on zebras (prey

Lion's prey is zebras
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complete
He told me the first part of the story .I couldn't wait to ........know / listen to.....next part of the story