What is the difference between adverbs and adjectives?

[Lotinmaxceau]

English Grammar Error, Intermediate level

ESL/EFL Test #17 "Christmas is coming", question 8

B: And what makes you so surely that it won't go against me when Father Christmas finds out?

(a) surely
(b) won't
(c) when

English Grammar Error, Intermediate level

ESL/EFL Test #17 "Christmas is coming", answer 8

B: And what makes you so sure that it won't go against me when Father Christmas finds out?

Correct entry: sure
The error was: (a) surely
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Sometimes I misplace an adverbe into an adjective, how does it work?

[Mister Micawber]

Adjectives modify/describe nouns only.
Adverbs modify/describe verbs, adjectives, other adverbs or the whole sentence.
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Native English teacher at Mister Micawber's

[Iawillum]

hello my name is Enneth and I am from Vanuatu,Iam enjoying the engish test but I am still not familiar with the adjectives and the adverb.Please help me . Thanks.