企业 Intranet 要与 Internet 互联，必需的互联设备是 ( )
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Itisbelievedthatgrammaranalysisandtranslationbegantobethebasicproceduresinforeignlanguageteachingfrom_______.
Helost________________parentswhenhewasachild.
Itisdifficulttounderstandthiskindof_______calculation.
Iappreciate________(give)theopportunitytostudyabroadthreeyearsago.
Werefer___youletterofMay2.