The man we followed suddenly stopped and looked as if          whether he was going in the right direction

1. A.
   seeing
2. B.
   having seen　
3. C.
   to see
4. D.
   to have seen

The man we followed suddenly stopped and looked as if ______ whether he was going in the right direction.

A.seeing                       B.having seen               C.to see                        D.to have seen

The man we followed suddenly stopped and looked as if           whether he was going in the right direction.

A.seeing

B.having seen　

C.to see

D.to have seen

The man we followed suddenly stopped and looked as if ______ whether he was going in the right direction.

A. seeing　　 　 　　 B. to see 　　

C. having seen　 　 D. to have seen

The man we followed suddenly stopped and looked as if ________ whether he was going in the right direction.

A．seeing 　　　 B．having seen 　　　　　　 C．to have seen 　 D．to see