1. Please call me if you ….. (to need) any help.
2. If he ….. (to arrive) on time we’ll discuss our plans before we go out.
3. She won’t go to Australia unless I ….. (to pay) for her tickets.
4. ….. she ….. (to be) angry if we don’t go to the meeting?
5. If you ….. (to work) hard you may be promoted.
6. If you help me I ….. (to repair) it.
7. If you leave now you ….. (to get) there before it closes.
16.Match two parts to form conditional sentences.
| 1) If iron is left in contact with air and water, | a) it rusts. |
| 2) In the event of collision, | b) unless there are better safety measures. |
| 3) If heat is applied, | c) download them onto your computer. |
| 4) If you want to study the files from the Internet, | d) we are successful. |
| 5) The tests won’t be continued | e) we will estimate the experimental error. |
| 6) If we run an additional test, | f) the substance decomposes. |
| 7) If we work hard, | g) the airbag will inflate. |