【题目】I drink a cup of coffee________；but usually I take tea.
A.frequentlyB.oftenC.constantlyD.occasionally
在线课程【答案】D
【解析】
考查副词词义辨析。句意：我偶尔喝一杯咖啡，但通常我喝茶。A. frequently频繁地；B. often经常；C. constantly连续不断地；D. occasionally偶尔地。but表示转折关系；根据后半句的usually，前面用occasionally，与usually 意思相对。故选D项。