________ is known to us all that the sun rises in the east.
| A．As | B．That | C．Which | D．It |
The lady is crazy _________ the beautiful clothes.
| A． in buying | B． about buy | C． about buying | D．to buy |
---What do you enjoy most in life?
---____________ time _________ books. It’s really good fun.
| A．Spend; read | B．Spending; to read | C．To spend; to read | D．Spending; reading |
____________the heavy snow in America, many people had to stay at the airport and couldn’t celebrate Cristmas with their family.
| A．Because | B．Thanks to | C．As a result of | D．As a result |
Although he is only 14 years old, he __________drugs for two years.
| A．addicts | B．has addicted to | C．has addicted | D．has been addicted to. |
The children were not allowed ________ the house because it was being painted .
| A．entering | B．to enter | C．entered | D．enters |