Underline the correct answer.

Underline the correct answer.
1.I can't help\but hope that they will succeed.
2.I can't help but think \to think that it was a mistake.
3.I can't chose\choose but do it.
4.He does nothing but complaining\complain.
5.I can't help but to love \ love her.
6.The workers do nothing \not but drink tea and talk to each other.