As we all know, smoking ___________ people’s health.
| A．is harmful to | B．do harm fo | C．does harmful to | D．harm |
The traffic on the main streets has a longer green signal than __________ on the small ones.
| A．one | B．this | C．that | D．it |
Alice received an invitation from her boss，__________ came as a surprise.
| A．it | B．that | C．which | D．he |
Paper is __________ great Chinese contribution to human civilization.
| A．a | B．the | C．不填 | D．an |
Read this story，__________ you will realize that not everything can be bought with money.
| A．or | B．and | C．but | D．so |
It was __________ that we wanted to stay here for another two days.
| A．such fine weather | B．such a fine weather |
| C．so fine weather | D．so fine a weather |