Question

1.		Economics, several courses of which I have taken thus far, prove to be difficult but useful for almost all students.
2.		In a hour's time I had done the work to my satisfaction; I got my hat in the hall and slipped out unnoticed.
3.		I just have the memory of my father to love now, but my faith in him has never been shaken.
4.		Why he should have went to the country house I cannot say; but he did go, remaining away the whole day.
5.		While John was carrying the paint can from the garage to the house, some of it spilled on his pants.
6.		Let's you and me bear in mind that there is no such thing as ghost.
7.		They questioned me unendingly about my trip to the Orient, where I had made some real valuable purchases.
8.		Many years ago, it was believed that the earth was square and a personwould fall off its edge.
9.		In New York they are considerably proud of their skyscrapers, the most breathtaking of which is the Empire State Building.
10.		She used rather harsh words in denouncing him; but she must of had some very strong motive for doing so.

Answer 1

1.		Economics, several courses of which I have taken thus far, prove => proves to be difficult but useful for almost all students.
2.		In a => an hour's time I had done the work to my satisfaction; I got my hat in the hall and slipped out unnoticed.
3.		I just have => have just the memory of my father to love now, but my faith in him has never been shaken.
4.		Why he should have went => gone to the country house I cannot say; but he did go, remaining away the whole day.
5.		While John was carrying the paint can from the garage to the house, some of it => the paint spilled on his pants.
6.		Let's you and me bear in mind that there is no such thing as => a ghost.
7.		They questioned me unendingly about my trip to the Orient, where I had made some real => really valuable purchases.
8.		Many years ago, it was believed that the earth was square and a person => people would fall off its edge.
9.		In New York they => New Yorkers are considerably proud of their skyscrapers, the most breathtaking of which is the Empire State Building.
10.		She used rather harsh words in denouncing him; but she must have had some very strong motive for doing so.

Answer 2

1.		Economics, several courses of which I have taken thus far, prove => proves to be difficult but useful for almost all students.
2.		In a => an hour's time I had done the work to my satisfaction; I got my hat in the hall and slipped out unnoticed.
3.		I just have => have just the memory of my father to love now, but my faith in him has never been shaken.
4.		Why he should have went => gone to the country house I cannot say; but he did go, remaining away the whole day.
5.		While John was carrying the paint can from the garage to the house, some of it => the paint spilled on his pants.
6.		Let's you and me bear in mind that there is no such thing as => a ghost.
7.		They questioned me unendingly about my trip to the Orient, where I had made some real => really valuable purchases.
8.		Many years ago, it was believed that the earth was square and a person => people would fall off its edge.
9.		In New York => New Yorkers they are considerably proud of their skyscrapers, the most breathtaking of which is the Empire State Building.
10.		She used rather harsh words in denouncing him; but she must of => have had some very strong motive for doing so.