Before I noticed a difference, 1 had thought the components were______.A．identicalB．equiva

Notice at office or daily life has different style. from letter.（)

Before 1500 North America was inhabited by more than 300 cultural groups, each with differ

I was so______on my study that I didnt notice the time.A．preoccupiedB．intentC．engrossedD．a

I didn t notice her______ at the opening ceremony.A．appearB．appearingC．to appearD．appeared

Why is a dog sitting before a computer keyboard i

Sometimes I wish I ________ in a different time and a different place. A) be livin