Put the following into the passive, mentioning the agent where necessary.
Where there is an indirect and a direct object, make the indirect object the subject of the passive verb.
They gave her a clock.
She was given a clock.
The gerund after certain verbs is replaced in the passive by should be + past participle:
They advised employing part-time workers.
They advised that part-time workers should be employed.

1 They feed the seals at the zoo twice a day.
2 Who wrote it?
3 Compare clothes which we have washed with clothes which any other laundry has
washed.
4 He expected us to offer him the job.
5 They showed her the easiest way to do it.
6 Lightning struck the old oak.
7 Titian couldn't have painted it as people didn't wear that style of dress till after his
death.
8 A jellyfish stung her.
9 The author has written a special edition for children.
10 Judges used to carry sweet herbs as a protection against jail-fever.
11 What did he write it with? ~
He wrote it with a matchstick dipped in blood.
12 An uneasy silence succeeded the shot.
13 Did the idea interest you?
14 The lawyer gave him the details of his uncle's will.
15 Beavers make these dams.
16 They used to start these engines by hand. Now they start them by electricity.
17 Most people opposed this.
18 Students are doing a lot of the work.
19 The Prime Minister was to have opened the dry dock.
20 They recommended opening new factories in the depressed area.
(Use should.)
21 The closure of the workshops will make a lot of men redundant.
22 Anyone with the smallest intelligence could understand these instructions.
23 We will not admit children under sixteen.
24 Boys of sixteen to eighteen are to man this training ship.
25 A rainstorm flooded the gypsies' camp.
26 The howling of wolves kept him awake all night.
27 They suggested making the tests easier. (Use should.)
28 Children couldn't have done all this damage.