Question

-- Lisa was seen ______ an old man go across the street this morning.
--What a kind girl she is!

A．helping

B．helped

C．to help

D．helps

Answer 1

C

試題分析：句意：---今天早上，Lisa被看到扶一個老人過街。---多么善良的女孩啊！看到某人做某事，see sb do, 改成被動語態時，應用be seen to do。故選C。