Ex. 1 Replace the group of words in bold type by the Infinitive. 1. Engineering includes a lot of areas "with which it deals".

2. Engineer has many branches "in which he can work".

3. Engineers use theory "for producing" practical answers.

4. Electric systems were constructed "for generating" electric signals.

5. All branches of engineering use sciences "which can improve" our life.

6. We have one more branch "about which we want to speak".

7. I was surprised "when I heard" about the way "of translating" the word from the

exercise.

8. The task of a civil engineer is "the design of" large buildings.

1) one 2) two 3) three 4) four 5) five 6) six 7) seven 8) eight 9) nine 10) ten 11) eleven 12) twelve 13) thirteen 14) fourteen 15) fifteen 16) sixteen 17) seventeen 18) eighteen 19) nineteen 20) twenty 21) twenty one 22) twenty two 23) twenty three 24) twenty four 25) twenty five 26) twenty six 27) twenty seven 28) twenty eight 29) twenty nine 30) thirty 31) thirty one 32) thirty two 33) thirty three 34) thirty four 35) thirty five 36) thirty six 37) thirty seven 38) thirty eight 39) thirty nine 40) forty

A. 1. I will go and see Venice as soon as I reach Italy. 2. If the sun is red, it is a sign that we will have a fine day tomorrow. 3. If you are not at home by six, I will eat without you. 4. If Mother doesn't go to the market early, she will not get fresh fish. 5. If Adam sells his car he will afford a holiday in Florida. 6. Take some coins in case you will need to phone. 7. If nothing goes wrong, they will deliver the furniture today. 8. Unless you change your mind we will not be able to help you. 9. I will take an umbrella in case it rains. 10. If your son does not wear sensible shoes on those hikes he will get blisters. 11. If Martin does not win it will be the end of his sport career. 12. I will be happy if my dream comes true. 13. If the situation gets worse, I will lose my job. 14. Unless he hurries he will miss the 5.30 train. 15. If your son does not work hard enough, he will forget what he knows.

B. 1. He will become an architect after he graduates from the University. 2. I will have to stop my daughter before she gets into trouble. 3. Will the new President make any changes in the country's policy when he comes to power? 4. Mum will visit you when the baby-sitter arrives. 5. She will relax after she hears the results of the interview. 6. My elder sister often develops a strong headache when the weather changes. 7. Tonight the old man will go to bed as soon as the sun sets. 8. He will not buy a new car until the company pays him all the money it owes him. 9. The refugees will be able to stay here till some urgent measures are taken. 10. The information will be studied carefully as soon as it is delivered. 11. Many people will be happy when this ugly war comes to an end. 12. Little Fred will not be able to leave the house till his mother comes back and unlocks the door. 13. Life will seem wonderful to you again as soon as all your worries are over. 14. The weather certainly will change for the better after the rain stops and the sky clears up. 15. He will not recover soon unless he takes the prescribed medicine.