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.
When I was almost 1 year old - в ед. числе. В этом же предложении, если уж "мои родители говоряТ", тогда "My parents say". Далее, здесь же, не думаю что надо использовать продолженное. либо так если используем when, My parents say that when I was almost 1 year old when they gave me pencils and paper for drawing, I was banging rhytm of the music which I heard lately. либо так, если не используем: My parents say that when I was almost 1 year old they gave me pencils and paper for drawing but I banged rhytm of the music which I heard lately. Because of it - лучше That's why. I like it because I can do it very well anyway my teachers say it. Это лучше разделить на 2: I like it because I can do it very well. At least my teachers say it.