His father got him a job in a bank but soon it became clear ______ he was not fit for that kind of work.
Is thisthe research center _____you visited thelablast year ?
Don’t believe him .He is just _____ an excuse .
-Would you mind if I take the seat? - .
The bell rang and came in Mr.Brown, a book in his hand. Then the class began.
In the past 5 years a great deal of money _____ improving the environment of the school.