TV you ogo did two watch days?
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37. If you buy five chairs, we will give you sixth one free.
38. If you sign the purchase agreement now, you will get a 5% discount on your next purchase.
39. We will have to make some workers redundant, if we don't get more orders soon.
40. They won't charge your delivery, if you order more than a hundred.
41. You will feel better, if you take regular breaks from your computer.
42. If I meet my target for this quarter, I will get a large bonus.
43. If you don't give your staff a pay rise this year, they won't be happy.

I used to have a dog when I was a child
He used to be noisy when he was young
She used to go to the country when she was 7
I used to walk many years ago
They used to drive fast when he was 20
Did you use to have a dog?
Did she use to go to the country?
Did he use to drive fast/
Did they use to walk 5 years ago?
Did you use to play tennis 5 years ago?
I didn't use to walk when I was 5
He didn't use to drive when he was 18
She didn't use to go to the country when she was 7
My mother didn't use to play tennis when she was a pupil
He didn/t use to have a dog