He said it was this classroom _______ he found his lost watch and _____ he would take good care of it from then on.

Rather than ______ at home , I prefer to go sightseeing in ___________

Having taken our seats, _______.[ ]

They have ________ since the factory opened.

_______ one and a half months enough for theproject to be finished —I am afraid not. The professor is ill andonly after he recovers ________ go on with it.