David is only four years old, _______ he plays the piano very well.
| A．so | B．also | C．because | D．but |
He can play tennis better than ___________ in the class．
| A．any boys | B．any other boy |
| C．any boy | D．any other |
The old man lives ___________ , but he never feels ___________．
| A．alone; lonely | B．lonely; alone |
| C．lonely; lonely | D．alone; alone |
—Do you know mother giant pandas have only one or two babies ___________?
— Sorry, I don’t know．
| A．at a time | B．at time |
| C．at times | D．at that time |
— Is this maths problem ___________?
— Yes, I can work it out ___________．
| A．easy ; easy | B．easily ; easily |
| C．easily ; easy | D．easy; easily |
— ___________does your sister walk her dog?
— Once a day．
| A．How many | B．How fast |
| C．How soon | D．How often |