It is generally believed that teaching is _____ it is a science.
| A．an art much as | B．much an art as |
| C．as an art much as | D．as much an art as |
_________ others whenever you can _______you will feel happy.
| A．Help; and | B．To help, and | C．Helping; so | D．Helped; then |
I prefer studying English at home ____ the match.
| A．rather than watching | B．to watch |
| C．rather than watch | D．to watching |
She and her family hid away for nearly twenty-five months _____ they were discovered.
| A．After | B．since | C．until | D．before |
It is the first time in a year and a half that I _______ the night face to face.
| A．had seen | B．have seen | C．saw | D．see |
It was because I was ill ________ I didn’t go to school.
| A．why | B．that | C．which | D．when |