According to a recent estimation, which may be optimistic, only 20 percent of job-seekers have had any sort of ________ training.
A. vocational
B. volunteer
C. vocal
D. voluntary
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Due to the unpredictable changes of weather, our summer camp activities were continuously ________ by storms and emergency calls.
A. hounded
B. horned
C. hauled
D. haunted
In the ________ months, the wolves continued to have daily social contact with humans and five adult dogs, with which they developed close relationships.
A. enclosing
B. enduring
C. ensuing
D. ensuring
The two roads extend into the forest and ________ into one, leading all the way to an old gold mine.
A. submerge
B. merge
C. emerge
D. verge
It is a pity that he has ________ become ________ enough to say NO to school violence.
A. always … timid
B. never … courageous
C. gradually … fearful
D. finally … bold