Read the passage and correct the mistakes, ______.
Tom was about to close the window __________his attention was caught by a bird.
---Do you have any good suggestions for our company? ---In my opinion, you should _________ the cost and increase the output.
At the meeting, the professor presented a new __________ to foreign languages.
Since the weather is rainy, the school sports meet is ___ to be put off.
---You don’t look quite yourself today. What’s the matter? ---Well, I’ve caught a cold. Nothing serious, ________.