He was riding to school it began to rain.
| A．as | B．so | C．while | D．when |
_______he is busy, ________he helps us often.
| A．Though, / | B．Though, but |
| C．But, though | D．/ , / |
Your child is only five. Is _____necessary for you to be so strict with him?
| A．this | B．it | C．one | D．that |
My mother always has__________ housework to do on weekends.
| A．too many | B．many too |
| C．too much | D．much too |
It’s important ______us to learn English well.
| A．of | B．in | C．for | D．with |
Liu Lei is ________better at Chinese than Liu Ying.
| A．a little | B．a few |
| C．many | D．more |