Coronavirus symptoms(症状) The viruses can make people sick, usually with a mild(轻度) to moderate(中度) upper respiratory tract illness(上呼吸道疾病), similar to a common cold(普通感冒). Coronavirus symptoms include a runny nose(流鼻涕), cough(咳嗽), sore throat(嗓子疼), possibly a headache (头疼)and maybe a fever(发烧), which can last(持续) for a couple of______(day). 提示:a couple of+可数名词复数