单项选择题
Instead of （） sights, Edison would spend the time （） in the public library.
A. seeing, reading B. see, read C. to see, to read D. seeing, to read
单项选择题 It was （） last week（）I knew the news.
单项选择题 One of the sides of the board should be painted yellow, and （） white.
单项选择题 （） of years ago, whales lived （） land and walked on four legs.
