Complete the sentences with suitable words.

Write one word in each gap.

Most [ ] my classmates have never volunteered in their lives.

Sarah can [ ] longer help us; she is absolutely exhausted!

I'm sorry for bursting [ ] tears; the news have really disappointed me!

And now, we are pleased [ ] report that five dogs in our shelter have fully recovered.

You don't have to be involved [ ] any projects if you don't want to.