Police say they are not sure if Mr. Carlson is __________ by himself, or if he may report to the leader of a larger drug smuggling operation.
Asecuring
Bretreating
Cpursuing
Dacting正確答案
答案與詳解
為什麼答案是 D
act by oneself 是固定片語，意為「獨自行動、單幹」。句意為警方不確定 Carlson 是單獨犯案，還是向更大販毒組織首腦匯報，語意完全吻合。
考點：securing=確保考點：retreating=撤退考點：pursuing=追捕考點：act by oneself
載入中…
