How lucky he was! He ____ involved in the murder.
| A．must have been | B．can have been | C．could have been | D．would have been |
______ with the size of the whole earth, the biggest ocean does not seem big at all.
| A． Compare | B． When comparing | C． Comparing | D． Compared |
Varieties of household goods are sold here, ________from babies’ toys to old men’s walking sticks.
| A．changing | B．varying | C．ranging | D．classifying |
In his speech, Marks made the point ______ far more people died from smoking than from taking drugs.
| A．what | B．where | C．which | D．that |
Every year _____ money and energy is spent on environment protection.
| A．large quantities of | B．a large number of |
| C．a large quantity of | D．a plenty of |
Nobody knows for sure what effect the global warming have ______ our environment in the long term.
| A．of | B．with | C．for | D．on |