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------------------------------------------------ Put the verbs in brackets into the Present Perfect Simple or Simple Past.

1. How long (he/wait) ?
2. Jeff (become) manager of the company in 1985.
3. When (you/last/see) him?
4. They (already/choose) someone for the job.
5. She offered me a cup of coffee and (show) me her new dress.
6. "When (it/happen) ?" "Well, it (happen) hours ago."
7. Bob can't answer the question. He (not/find) the answer yet.
8. It (rain) for half an hour.
9. I'm sorry, Jean isn't here; she (just/leave) .
10. Jennifer (not/speak) to me for weeks.
11. How long ago (you/come) here?
12. My sister (not/write) to me for weeks.
13. "(Jonathan/be) to see the doctor?"
14. You can't come with us. You (not/finish) your homework yet.
15. "(He/find) his lighter yet?" "Yes, he (find) __ it in his car."

The correct use of verb tenses is determined by the time context of the sentence. Examples involve using Present Perfect Simple, Present Perfect Continuous, or Simple Past forms of verbs like 'wait', 'become', and 'see'. The provided answers are filled in with respect to these guidelines.

Explanation:

When filling in the blanks with the appropriate tense, it is important to understand the context and time frame of the sentence to decide between Present Perfect Simple, Present Perfect Continuous, or Simple Past. Here are the verbs filled in:

How long has he been waiting?
Jeff became manager of the company in 1985.
When did you last see him?
They have already chosen someone for the job.
She offered me a cup of coffee and showed me her new dress.
"When did it happen?" "Well, it happened hours ago."
Bob can't answer the question. He has not found the answer yet.
It has been raining.
I'm sorry, Jean isn't here; she has just left.
Jennifer has not spoken to me for weeks.
How long ago did you come here?
My sister has not written to him for over two weeks.
"Has Jonathan been to see the doctor?" "Yes, he has."
You can't come with us. You have not finished your homework yet.
"Has he found his lighter yet?" "Yes, he found it in his car."

The key to determining the correct form is to look at the context for clues about the time the action takes place. Practices like these help to reinforce the correct use of verb tenses.