Question

—Must I turn off the gas after cooking ? 
—Of course . You can never be _______ careful with
that.

A．enough

B．too

C．so

D．very

Answer 1

B

can / could not...too是一個固定搭配，表示“無論怎樣也不過分；此句話的漢語意思是：－做完飯后一定要把煤氣關掉嗎？－當然，你越小心越好。有些學生誤認為can never be too…是一個孤立的結構，而逐字翻譯，從而誤選D。