27．As Senior 3 students, it is important to________a good state of mind.
| A．keep up | B．stick with | C．attend to | D．tie up |
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 |
72. I hate___ when people talk with their mouths full.
| A．it | B．that | C．these | D．them |