Choose the suitable words or word combinations to complete the sentences.

Choose the correct option.

Andy is [has|having] a birthday party next Sunday. Everything's ready for it.

The train to Manchester [leaves|leaving] at 10 am.

If we've run out of milk, I'll [go|going] buy some.

This time next year, I'll have already [finished|finishing] school.

Ben will have [be|been] [read|reading] The Lord of the Rings for ten hours in a couple of minutes.