An increasing body of research \_\_\_\_ that when leaders lighten up and create a fun workplace, there is a significant increase in the level of employee trust.
Ademonstrate
Bdemonstrates正確答案
Cdemonstrating
Dbeing demonstrated
答案與詳解
為什麼答案是 B
"demonstrates" 為單數第三人稱現在式動詞，與單數主詞 "body" 吻合，且符合主動語態與句意。
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