The young man invited the lady to dance with him, but she ______ his invitation．
| A．turned off | B．turned out | C．turned down | D．turned away |
＿＿＿＿＿＿ 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 |
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 |
—— Was that the new comer who walked by?
—— ＿＿＿＿＿.
| A．It must be that | B．It must have been | C．He must be | D．This must have been |
＿＿＿＿being March 12th, they planted trees on the hill.
| A．That | B．It is | C．It | D．This |