Trick-or-treating, parades, bobbing for apples are activities on Halloween.

Whatdo people do on Halloween? A: Treat or trick B: Apple bobbing C: Halloween party D: Visit haunted house

中国大学MOOC: The music reverted to old, familiar favorites. No drums, no guitars, just a piano and a ______ trumpet loping and leaning, ducking and bobbing.

The music reverted to old, familiar favorites. No drums, no guitars, just a piano and a ______ trumpet loping and leaning, ducking and bobbing. A: mute B: muted C: mutate D: murmur