Complete the sentences with suitable words.

Write one word in each gap.

The owner left their dog alone for a couple [ ] hours, and it ran away.

Tomorrow, I'm going to [ ] a talk about donating to charity campaigns.

Each of us can [ ] this community in our own way.

I'm sorry for bursting into [ ]; the news has really disappointed me!

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