It’s not ____books you read but the way___ you read them that decides how successfully you gain knowledge .
| A．a number of ; in which | B．the number of ; / |
| C．a good many ; which | D．quite a few ; in which |
67.I consider____ my duty to help you．
| A．it | B．this | C．that | D．its |
68 It was at four o'clock in the afternoon ____ he and his grandpa reached the museum in Guanghan.
| A．while | B．that | C．when | D．As |
69.I like ____ in the autumn when the weather is clear and bright.
| A．this | B．that | C．it | D．one |
70. -Do you like ___ here?
-Oh，yes. The air，the weather，the way of life. Everything is so nice.
| A．this | B．these | C．that | D．it |
71.The Parkers bought a new house but ____ will need a lot of work before they can move in.
| A．they | B．it | C．one | D．which |