He could do nothing but for the bus .A. wait, to comeB. wait; comeC. waiting; comingD. wa

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(答案→)A. wait, to e
B. wait; e
C. waiting; ing
D. waited; came
解析：考查词组：第一空填wait，因为could do nothing but do sth只好做…，第二空填to e，因为wait for sb to do sth等待某人做…,句意：他只好等汽车来。选A。