— Have you been to the Great Wall?
—Perhaps not in my memory. ________, it might have been during my early childhood.
| A．If any | B．If so | C．If ever | D．If not |
All flights _____because of the snowstorm，we decided to take the train instead.
| A．were canceled | B．had been canceled |
| C．having canceled | D．having been canceled |
---Have you seen the film Under the Hawthorn Tree(山楂树之恋)?
---Of course, I have .it was in our village ____ it was made.
| A．that | B．where | C．when | D．which |
I suggest that the person ____put into prison.
| A．refer to | B．referred to was |
| C．referred to be | D．referring to should be |
To make members of a team perform better, the trainer first of all has to know their ___and weaknesses.
| A．benefits | B．strengths | C．techniques | D．values |
28. ____well prepared you are ,you still need a luck in mountain climbing .