Iv. make the sentences 1) interrogative 2) negative: 1. money has gone into purchasing assets. 2. the firm has extended its resources through the use of credit. 3. the owner has invested some of his money into new businesses. 4. the company has bought assets for idle money. 5. new credits have increased the income of the purchaser. 6. the efficient cash flow has reduced the cost of productive assets. 7. idle cash has earned no profit.

1.    Money has not  gone into purchasing assets.
2. The firm has not extended its resources through the use of credit. 
3. The owner has not  invested any  of his money into new businesses.
4. The company has not  bought assets for idle money.
5. New credits have not  increased the income of the purchaser.
6. The efficient cash flow has not  reduced the cost of productive assets.
7. Idle cash has not earned any  profit. 2.      
1. Has  Money  gone into purchasing assets.
2.  Has The firm extended its resources through the use of credit. 
3. Has  The owner  invested any  of his money into new businesses.
4. Has The company   bought assets for idle money.
5. Have  New credits  increased the income of the purchaser.
6.  Has The efficient cash flow  reduced the cost of productive assets.
7.  Has Idle cash earned any  profit.