Exercise 2 put the following sentences into the passive voice: 1. no one has seen him anywhere this week. 2. somebody has invited her to the party. 3. they have done all the exercises in written form. 4. they had done everything before we came.

1He hasn't been seen anywhere this week.

2She  has been invited to the party.

3All the exercises have been done in written form.

4Everything had been done before we came.

1. He hasn't been seen anywhere by no-one this week;
2. She has been invited to the party by somebody;
3. All the exercises have been done in written form by them;
4. Everything had been done before we came by them.