英文: committed to provide OR committed to providing ???????

I say that the right answer is committed to PROVIDE

E.g
Hospitals are committed to provide us with high-quality medical services.
Schools are committed to provide students with a safe and secure learning environment.

Hospitals are committed to providing us with high-quality medical services. (wrong)

Supposedly, you're not supposed to use a secondary verb with "ing" after the first one with "ed" and another preposition (to).

2008-01-13 14:24:41 補充：
COMMITTED TO PROVIDE is the right answer...

the answer should be COMMITTED TO PROVIDE

It should be Committed to PROVIDING

This is a good question. Usually we will not use *ing* after *to*. However, in the sentense, that *to* is not serving as a preposition. *Commit to* is actually having a different meaning as *commit*.

See the following examples for using *commit*:
e.g. Mr. A committed suicide because of depression
e.g. Mr. B committed the crime due to his greediness.

But when we use *committed to*, we actually mean *voluntarily obliged to* do something:

e.g. Mr. C is so committed to his job.
e.g. Mr. D is committed to his duty as the president of the club.

So, when we use *committed to*, it should be followed by a noun / gerund. As such, we should use *committed to PROVIDING*

2008-01-10 14:37:19 補充：
the *providing* here is a gerund (= 動名詞)...it's the *noun* form of a verb (ie. a noun form of an action)

2008-01-10 14:46:30 補充：
*Commit* is not followed by a *to-infinitive*. if we say *commit to PROVIDE*, we actually see *to provide* as a *to-infinitive* which is wrong in this case.*Commit to* should be expressing a different meaning as *commit* alone, and it should be followed by a noun / a noun form of a verb (=gerund).

2008-01-10 14:46:31 補充：
*Commit* is not followed by a *to-infinitive*. if we say *commit to PROVIDE*, we actually see *to provide* as a *to-infinitive* which is wrong in this case.*Commit to* should be expressing a different meaning as *commit* alone, and it should be followed by a noun / a noun form of a verb (=gerund).

2008-01-10 14:55:17 補充：
and actually, when we use a *to* following *commit*, it is always in passive voice....so it should always be *committED to* and never *commit to* (so I have missed out the ED is last supplement....:p) for *commit* in active voice, there is never a *to* followed by.