问题
选择题
I could have helped him out, to tell the truth, I _____ too busy.
A．am
B．was
C．have been
D．had been
答案
答案：B
考查时态。句意：我本来能够帮助他，说实话，我太忙了。结合语境可知下文描述的是过去的状态，故用一般过去时态，选B。
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I could have helped him out, to tell the truth, I _____ too busy.
A．am
B．was
C．have been
D．had been
答案：B
考查时态。句意：我本来能够帮助他，说实话，我太忙了。结合语境可知下文描述的是过去的状态，故用一般过去时态，选B。