Choose the correct verb form to complete the sentence.

Choose the correct option.

I'm fine with [look|to look|looking] after my sister at weekends.

Laura was listening to Taylor Swift [sing|to sing|singing] her favourite song.

[Begin|To begin|Beginning] with, I would rather watch a horror movie.

Thomas saw a volcano [erupt|to erupt|erupting] and then calm down.

It was so kind of you [help|to help|helping] us after the earthquake.

I need Moira to help me [do|done|doing] this maths project.

Mr Richardson was seen [leave|to leave|left] his house secretly.

What do you think about the new Samsung smartphone? Is it really worth [buy|to buy|buying]?