_____ 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
All of us need ______.
#97995
A
to feel needed and admired
B
feeling needed and admired
C
to feel being needed and admired
D
to feel needing and admiring
Birds' singing is sometimes a warning to other birds ______ away.
#94926
A
to stay
B
staying
C
stayed
D
stayed
Mrs Brown was much disappointed to see the mobile phone she had had______the week before went wrong again.
#98561
A
it
B
it repaired
C
repaired
D
to be repaired