Vincent Teo (a) They are decorating a Christmas tree. (b) They adorning a christmas tree. Since adornment is a process of jazzing up, I guess the verb will suit better in your second example.
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Vincent Teo(a) They are decorating a Christmas tree.Since adornment is a process of jazzing up, I guess the verb will suit better in your second example.
(b) They adorning a christmas tree.