Choose the right forms of the verbs to complete the sentences.

Choose the correct option.

Who [have been eating|has been eating|has eating] my cookies recently?

They [has been building|been building|have been building] a lot of factories since 2015.

I [have been teaching|has been teaching|have been taught] languages for seven years.

Olivia and Jack [have reading|have been reading|has been reading] science fiction novels for the last two years.