He is so busy.He cannot afford enough time with his son________he wants to.
Work starts every day at 7 a.m. and goes on until late afternoon _____ a break at midday .
Perhaps this is the only market ____ you can get such cheap goods.
We _______ at the house as we _______ of buying it.
– Did you enjoy the book?--- Yes, it was so interesting that I couldn’t _____ it.
_____ all the inventions have in common is ____ they have succeeded.