1) want - a) to-infinitive
2) can - b) infinitive without to
3) it's worth - c) -ing form
4) can't help - c) -ing form
5) be bored with - c) -ing form
6) I'm reluctant - a) to-infinitive
7) like - a) to-infinitive или c) -ing form
8) would love - a) to-infinitive
9) happy - a) to-infinitive
10) finish - c) -ing form
11) let - b) infinitive without to
12) plan - a) to-infinitive
Ответ: a), b) или c)