—Where did you pick up the stamp?—It was at the post office ________ we worked in the summer vacation.
Believe it or not, he came _______.
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.