Make the following sentences negative and interrogative.

1. He has been painting this fence for a long time.
2. My secretary has been typing the report for 5 hours.
3. The boys have been trying to fix that bike since morning.
4. The tourists have been waiting for the guide since 4 o’clock.
5. You have been talking for almost an hour without stopping.
6. It has been snowing heavily during the whole night.
7. We have been looking for that café for half an hour.
8. He has been writing this letter since the lecture began.
9. He has been living in this city since 1970.
10. They have been repairing the road for the last five years.

1. Hasn't he been painting this fence for a long time?
- To make the sentence negative, we add "not" after the auxiliary verb "has" and invert the subject "he" and the auxiliary verb "has" to form the interrogative sentence.
- "Hasn't" is the contraction of "has not".

2. Hasn't my secretary been typing the report for 5 hours?
- To make the sentence negative and interrogative, we follow the same process as in the previous sentence.

3. Haven't the boys been trying to fix that bike since morning?
- Again, to make the sentence negative and interrogative, we follow the same process.

4. Haven't the tourists been waiting for the guide since 4 o'clock?
- Same as before, we make the sentence negative by adding "not" after the auxiliary verb "have" and invert the subject "the tourists" and the auxiliary verb "have" to make it interrogative.

5. Haven't you been talking for almost an hour without stopping?
- Once again, we apply the same rules to make the sentence negative and interrogative.

6. Hasn't it been snowing heavily during the whole night?
- The sentence is already in the present perfect continuous tense, so we just need to add "not" after the auxiliary verb "has" to make it negative. For the interrogative form, we invert the subject "it" and the auxiliary verb "has".

7. Haven't we been looking for that café for half an hour?
- The sentence follows the same pattern as the previous ones, where "not" is added to make it negative and the subject "we" and the auxiliary verb "have" are inverted to make it interrogative.

8. Hasn't he been writing this letter since the lecture began?
- Simply add "not" after the auxiliary verb "has" to make the sentence negative, and invert the subject "he" and the auxiliary verb "has" to form the interrogative sentence.

9. Hasn't he been living in this city since 1970?
- For this sentence, we again make it negative by adding "not" after the auxiliary verb "has" and invert the subject "he" and the auxiliary verb "has" to make it interrogative.

10. Haven't they been repairing the road for the last five years?
- As stated before, to make the sentence negative, we add "not" after the auxiliary verb "have" and invert the subject "they" and the auxiliary verb "have" to form the interrogative sentence.

Remember, when making negative sentences in the present perfect continuous tense, we use "not" after the auxiliary verb "have" or "has", and for interrogative sentences, we invert the subject and the auxiliary verb.