问题

His lack of professional knowledge ______for the failure of the experiment. [ ]

A: accounted
B: explained
C: counted
D: contributed

正确答案是：

同类题型

Edward, you play so well, but I _____ you play the piano

‘t you leave a message for him—Yes,but I need something ______I canwrite a note

Whether you will be admitted to a famous university is I can tell.

The weather is becoming _______________.

Our master often told us _______ things for granted.[ ]