A. if B. even though C. unless D. as long asTim is in g……

单项选择题People have always been（）about exactly how life on earth began.

A. curious
B. excited
C. anxious
D. careful

单项选择题—How about your trip to Hainan —It couldn't have been ______. Sometimes I went swimming in the sea; sometimes I lay on the sand.

单项选择题We obey him, ______ we are afraid of him, ______ we honor and love him.

单项选择题Hainan Island is ______ largest island of China.

单项选择题When and where to build the new factory ______ yet.

单项选择题To our surprise, the stranger ______ to be an old friend of my mother's.

单项选择题The police still haven' t found her, but they' re doing all they（）

A. may
B. can
C. must
D. will

单项选择题It was the doctor's carelessness that ______ the serious accident.

单项选择题How much ______ she looked without her glasses!

单项选择题The air of countryside is cleaner than ______ of city, but I don't like to live ______ far.