Find the mistake
I hope I will have bought my own house by the time I'm thirty
There is no one that can do this difficult sum without a calculator
I have heard of Dickens(but - although) I didn't know that he wrote Oliver Twist
I have been reading about women ( who - which )I found very interesting
Smile. Nothing can beat the power of ( bullied - positive - personal - inspecting ) thinking
Fewer traditional newspaper will ( be published - have been published ) in a few years