In conditional clauses (_if_), use _should_ for all persons.
Insert _should_ or _would_.
1. If I knew his address, I ---- send him a telegram.
2. He promised that he ---- not make the mistake again. (The direct form would read, I will not ---- )
3. I promised that I ---- not make the mistake again.
4. You promised that you ---- not make the mistake again.
5. Do you think that I ---- go?
6. I ---- if I were you.
7. I ---- think he ---- know better than to apply for that position.
8. John said that, no matter what we thought, he ---- not go.
9. If you ---- decide to accept the offer, let me know at once.
10. I am sorry he did that. He ---- not, of course.
11. If I ---- see him, I'd let him know.
12. If he ---- come during my absence, ask him to wait.
13. I ---- think you would be more careful.
14. Let me know if you ---- not be able to come.
=Exercise 106=
Change the italicized verbs to past tense, future, present perfect, past perfect, future perfect. Wherever necessary, add sufficient to make the meaning of the tense clear; as,
_Present_: The manager _is now_ in his office.
_Past_: The manager _was_ in his office _a few minutes ago_.
_Future_: The manager _will be_ in his office _to-morrow at ten o'clock_.
_Present Perfect_: The manager _has been_ in his office _all the morning_. (It is still morning.)
_Past Perfect_: The manager _had been_ in his office _only a few moments when the president arrived_.
_Future Perfect_: _In about five minutes_ the manager _will have been_ in the president's office _exactly three hours_.
1. The cashier _opens_ the safe in the morning.
2. The mechanic _earns_ good wages.
3. The buyer _leaves_ to-night.
4. The bookkeeper _makes_ out the statements.
5. The correspondent _writes_ the booklets.
6. The advertising manager _approves_ the copy.
7. The adding machine _is broken_.
8. The chief clerk _attends_ to the incoming mail.
9. The superintendent _visits_ the factory every day.
10. The salesman _is selling_ five thousand dollars'
worth of goods a week.
=Exercise 107=
The present tense is used to indicate general truths--things true in past time and still true. Omit the incorrect form in the following sentences:
1. What did you say _is_--_was_ the meaning of the term _bona fide_?
2. What _was_--_is_ the name of that book that you enjoyed so much?
3. Didn't you know that the lion _is_--_was_ called the king of beasts?
4. They told me that the legal rate of interest at present _is_-_was_ six per cent.
5. Have you ever heard him try to prove that black _is_--_was_ white?
6. What _is_--_was_ the name of the banker who lectured to us yesterday?
7. I never could remember what the important products of my county _are_--_were_.
8. The advocate of Equal Suffrage argued that mothers _need_--_needed_ the ballot to protect their children.
9. She said that a democracy _is_--_was_ a government of the people, by the people, and for the people, and that women _are_-_were_ people as well as men.
10. The speaker a.s.serted that this country _needs_--_needed_ a tariff to protect home industries.
=Exercise 108--Princ.i.p.al Parts=
No one can be certain of using the correct form of a verb unless he knows the princ.i.p.al parts. Some verbs are regular; that is, they form their past tense and their perfect participle by adding _ed_ to the present tense; as,