there are trivial things. both of them are right

الاجابة هي is going to لانها تنبؤ مع وجود دليل على ذلك

he is going to ........
as there is an evidence

ffffffffffffffff

the correct answer is will

the answer is "will" there is no evidence that it's near to happen

يوجد دليل لذلك الاجابه
is going to

without I think we can say he is going to pass.... but with I think we say he will as in the first one there is an evidence

"is going to "

Will الإجابه الصحيحه شى ظاهر الحدوث

will (prediction based on my knowledge
is going to ( prediction based on present reality- evidence
the correct answer is will

Complete these sentences with a correct form WB page 2
in brackets.
a It’s arranged. ........ (go) to the Red Sea this summer.
b I think my brother ......... (be) a doctor. He’s very clever.
c Are you ............... (play) tennis after school today?
d My lesson.............. (finish) at four o’clock this afternoon.

Answers:
a We’re going
b will be
c playing/going to play
d finishes/will finish

i think will