Drag the elements

• the Infinitive
• to let
• to enjoy
• to press
• without "to"
• listen
• join
• let
• press
• the Gerund
• listening
• joining
• watching
• talking
• being
• saying

We use [ ] with "to" to express purpose.

• He opened the window [ ] some fresh air in.

We also use it after adjectives like free, glad, unlikely and with constructions too+adj or adj+enough.

• James is unlikely [ ] going to such a crowded place.
• The button was situated too high for a child [ ] it.

We use the Infinitive [ ] after modal verbs, make, let, had better, would rather, why not and some other expressions.

• He can [ ] to music for hours.
• Let me [ ] you.
• Why not [ ] him in?
• I'd rather [ ] the green button.

We use [ ] after certain verbs like admit, enjoy, miss, mind, expressions like be worth, no use, no good, feel like, etc. and prepositions on, for, after, without, etc.

• He enjoys [ ]to music.
• She doesn't mind [ ] us.
• The movie is absolutely not worth [ ].
• It's no use [ ] to her—she's too stubborn.
• I'm sorry for [ ] late.
• He left without [ ] a word.