{{B}}quEstions 27-30{{/B}}

A、twElvE months, DEpEnDing on whEthEr thE ExhiBition is smAll or lArgE.
B、FivE months, DEpEnDing on thE nEtwork oF ContACts thEy hAvE in thE host Country.
C、six months, DEpEnDing on things suCh As thE typE oF gooDs BEing ExhiBitED、
D、six months, DEpEnDing on thE proDuCts, thE loCAtion AnD nEtwork oF ContACts, loCAtion, EtC、