You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.
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Question: and the advertisements begin

Answer: why am I being blocked from going to 123greetings.com every time I have always been able to go there?

Question: Their respective market caps are too close for this to ever happen.
Interestingly, many reporters, analysts and tech pundits that I talk to think that the supposed competition between Google and Yahoo is fallacious, and that they are very different companies with very different strategies. Google's true competitor is often seen as being Microsoft, not Yahoo. This would support your claim that they are complementary.

Answer: When will Google buy Yahoo?

Question: It depends on the disease. Some will show symptoms in a few days. Others it may take up to a month. In the case of HIV, it may take years to develop symptoms. The question I would need answered is how do you know they had an STD? Their STD or their symptoms will allow you to get a more specific answer to your question.

Answer:
if with in sexual contact with a person with std how many days before symptom appears?