C. You can receive instant feedback from your audience
When they <u>worked</u> in the garden, the phone <u>rang.</u>
Mike <u>plays</u> on his notebook now. How long has he <u>played?</u>
hope this helps!
1: c) did - go
2: b) doesn't
3: a) talked
4: d) had
5: b) bought
For all of these, you just need to make sure the verb tense matches up and that the sentence flows + makes sense.
The answer for number 2 is D. The answer for number 1 is A I believe.