The project ______ last month but unfortunately it had to be prolonged because of the financial problem.
He has worked the maths problem for nearly an hour but he simply can’t work it. On ;atB. on ;out C. at ;up D. for ;out
Every means ______ tried but without much result.
______ is to attend our evening.
If you keep __________ English, you can learn English well.
__________ the assignment made his father lose his temper.