(a) switchboard
(b) taste
(c) directory
(d) defense
217.v. to try to; to assay
(a) exist
(b) attempt
(c) publicize
(d) provision
218.v. to write down in a timetable; to register
(a) size
(b) attempt
(c) calendar
(d) tantalizing
219.v. to bind; to fasten with a rope or cord
(a) insist
(b) tie
(c) boost
(d) release
220.v. to cite; to state a price; to offer a price
(a) delete
(b) take
(c) quote
(d) accept
正確答案:cbcbc