Questions about two sentences

I'm going through some JLPT-2 sample tests and studying the questions I got wrong. The grammar section is multiple-choice, fill-in-the-blanks, and I'm still puzzling over these two a bit.

英語の勉強がしたいのですが、どこかいい学校をご紹介願えるでしょうか。
（答え：願える）

Is this a really polite way of asking "might I be introduced to a nice school somewhere"? I've never seen 願う used quite like this before.

Secondly:

兄の話によると、王さんは帰国してしまったとか。
（答え：とか）

I can't quite see what the purpose of "toka" is there. I might have expected something like っていうことだ but maybe I'm misunderstanding something.

On a related note, does anyone else find the JLPT grammar questions really hard? I'm used to assuming that all the Japanese I read makes sense, so having to figure out which three options don't make reasonable sentences is awfully tricky.

Paul

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