Not until they left school how much their teachers loved them and helped them.
| A．they realized | B．did they realize |
| C．had they realized | D．they would realize |
the buildings were knocked down in the earthquake in the city of Tangshan..
| A．A great deal of | B．A great many |
| C．The number of | D．A great many of |
Americans eat_____vegetables per person today as they did in 1910.
| A．more than twice | B．as twice as many | C．twice as many as | D．more than twice as many |
Hurry up, kids! The school bus _______ for us!
| A．waits | B．was waiting | C．waited | D．is waiting |
—What a mistake!
—Yes. Ihis doing it another way, but without success.
| A．was suggesting | B．will suggest | C．would suggest | D．had suggested |
All visitors to this village _________ with kindness.
| A．treat | B．are treated | C．are treating | D．had been treated |