“Bad-mouth” used as a verb can take the past tense marker e.g. “He bad-mouthed me.” This example shows a compound tends to play a single ____ role in a sentence.
“Bad-mouth” used as a verb can take the past tense marker e.g. “He bad-mouthed me.” This example shows a compound tends to play a single ____ role in a sentence. 【正确答案】：grammatical
