believed she ---- do such a thing.
23. We ---- never have come.
24. ---- you think him capable of such a trick?
25. I knew I ---- not be here on time.
26. ---- they dare to attempt opposition?
27. How ---- you go about it?
28. Lincoln, under those circumstances, ---- probable not have been
elected.
29. It ---- have changed our whole history.
30. He said that it ---- have changed our whole history.
31. He said he ---- come.
32. She thinks they ---- not do it.
33. We believe that we ---- like to go at once.
34. They say it ---- be done now.
35. I think I ---- like to go.

EXERCISE 50

_Write five sentences in which SHOULD is used independently, and
five in which SHOULD is used dependently._

_Write five sentences in which WOULD is used independently, and
five in which WOULD is used dependently._

_Write five sentences in which SHOULD is used in questions, and
five in which WOULD is used in questions._

69. USE OF MAY AND MIGHT, CAN AND COULD. _May_, with its past tense,
_might_, is properly used to denote permission. _Can_, with its
past tense, _could_, refers to the ability or possibility to do
a thing. These two words are often confused.

EXERCISE 51

_Fill the blanks in the following sentences:_

1. ---- I go home?
2. ---- we get tickets at that store?
3. ---- the mountain be climbed?
4. ---- we come into your office?
5. You ---- stay as long as you wish.
6. ---- you finish the work in an hour?
7. How ---- you say such a thing?
8. Several people ---- use the same book.
9. We ---- afford to delay a while.
10. ---- John go with me?
11. You ---- often hear the noise.
12. What ---- not be done in a week?
13. That ---- be true, but it ---- not be relied on.
14. What ---- he do to prevent it?
15. When ---- we hand in the work?

70. PARTICIPLES AND GERUNDS. The past participle has already been
mentioned as one of the principal parts of the verb. Generally, the
PARTICIPLES are those forms of the verb that ARE USED ADJECTIVELY;
as, _seeing, having seen, being seen, having been seen, seen, playing,
having played_, etc. In the following sentences note that the verb
form in each case modifies a substantive: _He, HAVING BEEN INVITED
TO DINE, came early, John, BEING SICK, could not come_. The verb
form in all these cases is called a participle, and must be used
in connection with either a nominative or objective case of a noun
or pronoun.

The GERUND is the same as