Choose the correct option a-c to complete the sentences. 1. Experts . of the bankruptcy since the company...

Let's consider the context and grammatical structures required for each sentence to choose the correct options:

1. Experts . of the bankruptcy since the company was founded.

   The correct option is a) have been warning. This sentence requires the present perfect continuous tense because it indicates an action that started in the past and has been ongoing up to the present. The phrase "since the company was founded" suggests a continuous process of warning.

2. It was a relief to find documents I. for them all afternoon.

   The correct option is c) had been working. This sentence uses the past perfect continuous tense to indicate an action that started in the past and continued up until another point in the past. The phrase "all afternoon" signifies a duration, which is best expressed with the continuous form.

3. We already . the goods when your telegram arrived.

   The correct option is b) had shipped. This sentence uses the past perfect tense to show that the action of shipping the goods was completed before the arrival of the telegram, a past event.

4. I . your proposal, and I'm quite impressed.

   The correct option is c) have reviewed. The present perfect tense is suitable here as it connects the action of reviewing the proposal in the past with the present moment, influencing the speaker’s current impression.

5. The company . in car sales for many years.

   The correct option is a) has been dealing. This sentence requires the present perfect continuous tense because it describes an activity that started in the past and continues into the present, emphasizing the ongoing nature of dealing in car sales.

6. By the end of the month I . this project.

   The correct option is b) will have finished. The future perfect tense is used here to indicate that an action will be completed by a specific point in the future, which in this case is "by the end of the month."

7. I . the approval of three committee members before Bob signed off on the project.

   The correct option is a) had already got. This sentence requires the past perfect tense because it describes an action completed before another action in the past, i.e., Bob signing off on the project.

8. How long . in sales?

   The correct option is b) have you been working. This sentence uses the present perfect continuous tense to inquire about the duration of an activity that started in the past and continues into the present, which is common with questions about experiences or durations.

1. Experts have been warning of the bankruptcy since the company was founded. (a)
2. It was a relief to find documents I had been working for them all afternoon. (c)
3. We already shipped the goods when your telegram arrived. (c)
4. I have reviewed your proposal, and I'm quite impressed. (c) 5.