He has behaved in the most extraordinary way recently. I wonder what can_____ his actions.

He has behaved in the most extraordinary way recently. I wonder what can_____ his actions.

A．account for        B．answer for         C．search for         D．reach for

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He has behaved in the most extraordinary way recently, I wonder what can _______his actions.          

He has behaved in the most extraordinary way recently. I wonder what can ________his actions.

A. answer for　　 B. leave for

C. ask for　　 D. account for

He has behaved in the most extraordinary way recently. I wonder what can_____ his actions.

1. A.
   account for
2. B.
   answer for
3. C.
   search for
4. D.
   reach for