They had planed to the building but the bomb failed to ．A.bomb; set offB.explode
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They had planed to _______ the building but the bomb failed to _______．
A.bomb; set off
B.explode; bomb
C.bomb; explode
D.set off; explode
试题答案
C
句意为“他们本打算炸那座大楼,但炸弹没爆炸”。bomb既可以用作名词“炸弹”，也可以用作及物动词，意为“轰炸，投弹于”，后面必须跟宾语。set off作不及物短语是“出发”的含义。