appraisal()
A.rucksack
B.the act or an instance of appraising
C.irregular swelling
decline()
A.to politely refuse
B.to politely receive
C.to politely apologize
awash()
A.be full of
B.award
C.legacy
plausible()
A.easy to be solved
B.hard to be solved
C.be right or reasonable, believable