问题补充：
---Weareplanningtohaveacasualget-togetherthisSaturdayorSunday.Areyoucoming?--- ________.I’vegotratherafulldaythisweekend.A.I hope soB.Sounds greatC.I’m afraid notD.You’d better not
答案：
C解析考查交际用语。I hope so我希望如此；Sounds great听起来很棒；I’m afraid not 我恐怕不能；You’d better not你最好不要。我们计划这周六或周日举行聚会，你来吗？我恐怕不能，周末我会很忙。选C.
