85. I couldn’t have managed it without your help.  If_…………………………………………… 86. It was her determination which enable her to get better so quickly.  If…………………………………………… 87. He doesn’t get a job, so he can’t pay his bills.  If…………………………………………… 88. She isn’t fit because she sits around too much.  If…………………………………………… 89. The fire brigade came immediately, so the house didn’t burn down.  If_…………………………………………… 90. Sue walked to work in the rain and caught a cold. If…………………………………………… 91. We can’t bathe in this part of river because the water is too dirty. …………………….………………………………………………………… 92. We spend too much money on electricity because we have four air conditioners in our house. ……………………….……………………………………………………… 93. I can’t write to Linh because I don’t have her address. ……………………….……………………………………………………… 94. Dick often causes accidents because he drives carelessly. ……………………….……………………………………………………… 95. We can’t give much help to the poor because we waste a lot of money on unnecessary things.  ……………………….………………………………………………………

85. I couldn’t have managed it without your help.

 If it hadn't been for your help, I couldn't have managed it.

86. It was her determination which enable her to get better so quickly.

 If it hadn't been for her determination, she wouldn't have got better so quickly.

87. He doesn’t get a job, so he can’t pay his bills.

 If he got a job, he could pay his bills.

88. She isn’t fit because she sits around too much.

 If she didn't sit around too much, she would be fit.

89. The fire brigade came immediately, so the house didn’t burn down.

 If the fire brigade hadn't come immediately, the house wouldn't have burned down.

90. Sue walked to work in the rain and caught a cold.

If Sue hadn't walked to work in the rai, she wouldn't have caught a cold.

91. We can’t bathe in this part of river because the water is too dirty. 

If the water weren't too dirty, we could bathe in this part of river.

92. We spend too much money on electricity because we have four air conditioners in our house. 

If we didn't have four air conditioners in our house, we wouldn't spend too much money on electricity.

93. I can’t write to Linh because I don’t have her address.

If I had Linh's address, I could write to her.

94. Dick often causes accidents because he drives carelessly. 

If Dick didn't drive carelessly, he wouldn't often cause accidents.

95. We can’t give much help to the poor because we waste a lot of money on unnecessary things. 

If we didn't waste a lot of money on unnecessary things, we could give much help to the poor.