请帮助解答以下英文填空

above words 呢?1。The fundamental cause of his success is his ability to work for long hours without feeling 2。The board is making the strategic decision。 3。The letter should be marked “personal”, otherwise,my secretary may read it。 4。Your advice will be very valuable to me。 5。He arrived at the critical moment。 6。Everybody should have good technical training before he starts to work in this factotory。 7。We had a very enjoyable holiday on the beach and everybody was looking forward to the next 8。You must first determine the central idea of the article you are going to wiite and then 9。I was told that digital cameras could make much clearer pictures。 10。 As far as the global market is concerned, we are improving our sales。 再问： non