The good thing about today’s children is that they can_____ very easily to new environments.
A. attain B. allocate C. adapt D. adopt
As a teacher, it is my _________ to make the students devoted to their study.
A. responsibility B. affection
C. performance D. judgment
The research lacks evidence，and therefore，its conclusions are doubtful.
A．solid B．fierce C．severe D．potential
A good friend should be kind and helpful. _________ is my mother.
A. A such friend B. One such friend
C. Any such friend D. Such one friend
Though he is ill，he has not quit .
A．smoke B．to smoke C．smoked D．smoking
Evidence of a powerful volcano, which erupted under the ice sheet of West Antarctica around 325BC and might still be active now, __________ so far by British scientists.
A. confirmed B. has confirmed
C. is confirmed D. has been confirmed
