The boy looked at the stranger carefully, ______ who he could be.
A. to wonder
B. wondering
C. wondered
D. having wondered
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______ was very ______ that little Jim wrote the letter.
A. It ... careful
B. It ... carefully
C. He ... careful
D. He ... carefully
______ that this region was so rich in natural resources.
A. Little he knew
B. Little did he know
C. Little he did know
D. Little he had known
Is the hotel ______ offered you a job ______ you stayed the first time you arrived here
A. which ... where
B. the one ... in which
C. where ... that
D. the one that ... which
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