1 . He fixed his eyes on the gifts which arrived just now and seemed ______ who might have sent them.

A．being wondering	B．to have wondered
C．to be wondering	D．having wondered

2 . The old man looked up towards the moon and seemed, judging from his facial expression, ________ of his family.

A．to think

B．thinking

C．to have thought

D．to be thinking

3 . The researcher puts these impolite behaviors under a microscope in an attempt to explain why we seem________ so much ruder these years.

A．to be becoming

B．becoming

C．to becoming

D．that we become