Daniel, you into things . How can anyone be so clumsy?
A. always knock
B. are always knocking
C. always look
D. are always looking
网友回答
A. always knock
(答案→)B. are always knocking
C. always look
D. are always looking
解析：考查时态。Always与进行时连用，表示不耐烦、批评的语气。knock into“撞上”。故选B。