单项选择题
（）we have finished the book, we shall start doing some exercises.
A．For now B．Since that C．Now that D．Since already
单项选择题 I can not help（）the box for you, as I am too tired.
单项选择题 It was not（）she took off her dark glasses（）I realized she was a famous film star.
单项选择题 I didn't know his telephone number, otherwise I（）him.
