--instructions--

This task doesn't have audio. Read the question below and select the correct answer.

--questions--

--text--

Which sentence correctly uses since in the Present Perfect Continuous tense?

--answers--

I have worked on the project since last week.

--feedback--

This is Present Perfect Simple tense. The verb form should be in the Present Perfect Continuous tense (have been working) to indicate an ongoing action.

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I was testing the program since yesterday.

--feedback--

This is Past Simple tense. The Present Perfect Continuous tense should use have been instead of was.

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I have been testing them since the latest software update.

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I will have been working on the project since next month.

--feedback--

The Future Perfect tense is not appropriate here; since is used with the Present Perfect Continuous tense.

--video-solution--

3

--explanation--

Since is used in the Present Perfect Continuous tense to indicate the starting point of an action that is still ongoing.