Определите время глагола: Present Simple, Present Continuous, Past Simple, Future Simple 1 don’t know 2 am finding 3 doesn’t come 4 says 5 started 6 will explain 7 is suffering

1. Present Simple

2. Present Continuous

3. Present Simple

4. Present Simple

5. Past Simple

6. Future Simple

7. Present Continuous

1) They had been keeping silence for some time when somebody entered the room.
2) She had been lying there for two hours when we found her.
3) It had been raining hard for 3 weeks until the weather changed.
4) The four of them joined Mark, who had not been working for half an hour. 5) I had been standing at the bar for 40 minutes when my acquaintance came up.
6) Had she been waiting for him all the morning when he appeared?
7) Had my brother been volunteering there for a year before he entered the university?

How many colleges and universities in the USA  have effective programs of advertising education?
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Only 35 colleges and universities in the USA have effective programs of advertising education, don't they?
Where do colleges and univcersities have effective programs of advertising education?
Do only 35 colleges and universities in the USA have effective programs of advertising education?
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What kind of programs do only 35 colleges and universities in USA have?