confusion in regard to use of verb

[Asokray]

Sir

'School will remain closed' and 'School will remain open'. Why open not opened.

Another question about infinitive verb, such as to see, to play, etc. But why it is - ' I look forward to hearing from you. 'After the accident, he is limited to using this chair'.

Kindly explain.

Regards,

Asok Ray

[Torsten]

"Closed" and "open" are adjectives.

The phrase "I look forward to" is followed by a noun so the gerund 'hearing' is a noun, not a verb. The same holds true for the phrase 'limited to'.

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