A.theory B.social C.concern D.operate
A.goods B.food C.cool D.pool
A、 B、 C、 D、
A.retire B.relate C.effort D.elect
A.passage B.nest C.aside D.affairs
A.food B.foot C.good D.flood
A. B. C. D.
A.reason B.switch C.spirit D.seldom
A.recent B.receive C.rebuild D.revolution