Here are a few additional comments in addition to what Philip has written:
3. I would not use "all" the way you've used it. You could use a word such as "entirely" this way, for example: - The church was made entirely of precious stones. However, that suggests that the church was made of nothing else -- i.e. it was made only of precious stones.
7. I think you could use "what about" in that sentence, but only if the question is used to suggest an alternative activity. In other words, I can imagine it being used after someone else has already suggested doing something different. It seems to me that "How about doing X" is more likely to be used than "What about doing X" when you want to make an initial suggestion. That's just my p
Thank you very much for your corrections. Sorry, but can you explain me where is exactly my mistake in : As soon as he turned sixteen on December 08th...? And in "She had a Mass said for her grandmother's birthday", is the meaning of "to havea Mass said for someone" the same as "Sheprayed a Mass for someone" ?
Mass is a term used in Catholice (and some other liturgical churches) for the basic rite. It is usually capitalized. It is said (sung) by a priest, while others attend and participate.
I believe there was an intervening post about "how/what about"..