_____ that he isn’t adequate to the present job, he devotes all his spare time to studying  professional knowledge.
#95588
A
Concern
B
To concern
C
Concerned
D
Concerning
推荐题目
When the teacher came in, the students pretended _______ the text.
#93888
A
to read
B
to be reading
C
to have read
D
having read
The club,  _    _ 25 years ago, is holding a party for past and present members.
#93218
A
founded
B
founding
C
being founded
D
to be founded
Little Jim should love _____to the theatre this evening.
#98361
A
to be taken
B
to take
C
being taken
D
taking