Як правильно?

2. Tom (give) some explanation why he (be) late for school.

3. John (take) his book and (leave).

4. What (you do) at 10 o'clock yesterday morning?

5. Bill (listen) to the teacher while the others (talk) notes.

6. He (wait) for Linda for two hours

2. Tom gave some explanations why he had been late for school.

3. John took his book and left.

4. What did you do at 10 o'clock yesterday morning?

5. Bill was listening to the teacher while the others were taking notes (were talking).

6. He waited for Linda for two hours.

2) gave; had been

3) took, left

4) did you do

5) listened, were talking

6) waited / had been waiting