_____ 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
While he was ______ about in the street, Mary came up to him.
#96816
A
wandering
B
wondering
C
wondered
D
wandered
“Good morning. Can I help you?” “I’d like to have this package _______.”
#98418
A
be weighed
B
to be weighed
C
to weigh
D
weighed
I’m sorry that I can’t help _____ trees because I am busy with the homework.
#97009
A
to plant
B
planting
C
planted
D
plants
Alice kept quiet about the incident _______lose her job. ( )
#89663
A
so not as to
B
so as not to
C
so as to not
D
not so as to
According to the engineer, there remain some tests _____ before the machine is put into operation.
#91175
A
carrying out
B
carried out
C
being carried out
D
to be carried out