8. Underline the correct form to make conditional sentences.
1. If Rita opens /will open a boutique in the High Street, she’ll make lots of money.
2. If the economy doesn’t improve, lots of businesses will close / would close down.
3. This burglar alarm is so sensitive: it goes off if a mouse runs / will run across the floor.
4. George may go to prison unless he won’t pay / pays his taxes.
5. The company was / would be more successful if it spent more money on advertising.
6. If the employees of a company are/were happy, they work harder.
7. We might sell our business if it makes / would make another loss this year.
8. It looks like Molly’ll be okay, unless something new will happen / happens.
9. Unless Shelly had read him wrong, Jack would find /would have found her unorthodox approach irresistible.
10. Mat would not trust/ didn’t trust that unless he had to.
9. Open the brackets to form conditionals. Mind mixed conditionals.
1. If Felix (to be) ___________ here I would have seen him.
2. Michael would not agree even if you (to ask) ____________ him.
3. If they (mention) __________ this yesterday, everything would have been done.
4. If I (to find) __________ that letter, I’ll show it to you.
5. If I meet him, I (to invite) __________ him.
6. Would they come if we (to invite) __________them?
7. The boss (be) __________ very disappointed if you aren’t at the meeting tomorrow.
8. The teacher said, “I’ll begin the lesson as soon as Jack _____________ (stop) talking.”
9. The old gentleman doesn’t go out in winter. He _____________ (go) out if the weather gets warmer.
10. She’s flying to Cairo tomorrow. She’ll send her family a telegram providing she _____________ (arrive) with a delay.
11. If the plane had left on time, they _____________ (be) in Minsk now.
12. If they hadn’t walked 40 km, they _____________ (not / be) exhausted now.
13. What would have become of us, if I _______ (come) to you then!'
14. He would have been scrupulous — if he (can) ________ !
15. What is the answer if you (add) _______ 17 to 75
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