Iboughtthiseighteenthcenturywritingdeskataquite________price.
A、reasonable________tothepapersisrestrictedtoDefenseDepartmentpersonnelonly.
Weregretto________thatitmaynotbepossibletodealwitheveryrequest.
Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
Theoppositionleaders________thegovernmentfornottakingactionsooner.
Theproblem________whenthestudentsrefusedtodotheirhomework.