AMBIGUOUS
(a) contrasting
(b) connivance
(c) vague
(d) wilful

ELUCIDATE
(a) clarify
(b) calculate
(c) summarise
(d) update

MONOTONOUS
(a) dreary
(b) dreadful
(c) single-minded
(d) monologue

KINDLE
(a) make fun of
(b) excite
(c) very kind
(d) kind-hearted

PALATIAL
(a) very clean
(b) very special
(c) sense of taste
(d) magnificent

TACTFUL
(a) diplomatic
(b) indifferent
(c) intelligent
(d) deceitful

VORACIOUS
(a) very bad
(b) insatiable
(c) stingy
(d) malicious

STRICTURE
(a) strictness
(b) stinging
(c) discipline
(d) censure

OBEISANCE
(a) homage
(b) pilgrimage
(c) subjugation
(d) obligation

A truly respectable old man is a ripe person.
(a) senior
(b) mature
(c) perfect
(d) seasoned

The soldiers repulsed the enemy.
(a) defeated
(b) destroyed
(c) rejected
(d) repelled