He . documents by the time the boss came.

В данном предложении посмотрим на время, да и на само задание:

Скажем, что в данном случае нет отрицания и тут время Past Perfect!

Значит получаем такое предложение:

He  had prepared documents by the time the boss came.

1)listen,ivan sings in neighboring room.

2)he doesn't see that i look at him as

he reads something with great interest

3)call him now,i thik he still doesn't

sleep.

4)look at the person who sits by window

w.it's our lowyer.

1 east

2 west

3 occasions

4 connected

5 associated

6 religious

7 marks

8 widely

9 unite

10 fireworks

11 follow

12 include

13 although