John was one of the top students in our class, but believe it or not, he_______ passed the English exam last term.(西安市)
Americans eat __ vegetables per person today as they did in 1910.
I wonder if you know it ___ .
The number of people invited ___ fifty, but a few of them ___ absent for different reasons.
—George is a wise person. —But in my opinion, he is ___ than wise.
The roof fell ____ he had time to rush out.