Answer:
capable
adj.
keen
,
tough
up to snuff
phr.
,
adj.
keen
,
competent
up to
adj.
,
phr.
fit
,
likely
adequate to
adj.
able
adj.
tough
,
energetic
competent
adj.
tough
,
energetic
eligible
adj.
fit
,
worthy
efficient
adj.
keen
,
competent
adequate
adj.
tough
,
competent
good
competent
Explanation: