—I’m afraid you missed a fantastic lecture yesterday. How come you were absent from it?—If you _______ know, I asked for a day off and visited a relative of mine in hospital.
In America and Europe, it is __________ to tip anything from 10% to 20%.
The couple said they __________ for Chicago the next month.
I __________ it if you could show me the way downtown.
Even if the US __________ do so, it __________ change the size of the US trade deficit.
An agreement __________ be reached when the other side raised new problems.