Great changes_____ in the small city in the last 20 years.
| A．have taken place | B．took place | C．had taken place | D．are happening |
She finds ＿＿＿＿＿＿ boring ＿＿＿＿＿＿ at home.
| A．it； staying | B．that； being stayed | C．this； to stay | D．it； stayed |
＿＿＿＿＿＿ for the free tickets, I would not have gone to the films so often.
| A．If it is not | B．Where it not | C．Had it not been | D．If they were not |
He said, “＿＿＿＿＿ a long way to school. ＿＿＿＿＿ a long way to go yet before we arrived.”
| A．It is ； There is | B．There is ； It is |
| C．It is ； It is | D．There is； There is |
It’s the third time ＿＿＿＿＿ arrived late this month.
| A．that you | B．when you | C．that you’ve | D．when you’ve |
Our classroom is very clean. Do you know who＿＿＿cleaned it?
| A．was it that | B．it was that | C．was it who | D．he was |