Some forms of algae have to growing on ice.
| A．adopt | B．adapt | C．advocate | D．addict |
Bob _____a series of brutal murders.
A. committed C. crimed C. commited D. did the wrong
Costs have been reduced ___20% over past year.
| A．in | B．on | C．to | D．by |
Don’t touch him, for he is a ______person.
| A．friendly | B．dangerously | C．frankly | D．dangerous |
He is a ______ traveller.
| A．addictive | B．addicted | C．addition | D．additional |
—Where will you start your work after graduation?
—Mmm, it's not been decided yet. I ____ continue my study for a higher degree.
| A．need | B．must | C．would | D．might |