There appeared

[adam]

Test No. incompl/inter-4 "Easy Questions", question 6

After two rings of the bell she suddenly ......... in the doorway.

(a) seemed
(b) looked
(c) appeared
(d) viewed

Test No. incompl/inter-4 "Easy Questions", answer 6

After two rings of the bell she suddenly appeared in the doorway.

Correct answer: (c) appeared
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why is there appeared?

[Alan]

This means that she was suddenly seen. Appear means become visible quickly/unexpectedly.
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English as a Second Language
You can read my ESL story Read all about it

[Kuti]

it s becouse the word Appear has a passive meaning itself:TO BE SEEN SUDDENLY..that gives you the clue not to use the ACTİVE ONES...

[Rich7]

My dear friend Kuti, I've noticed that you have the recurrent mistake of misspelling "BECAUSE".

My advice here would be: to proofread before posting using the preview feature below.