单项选择题
A.she realized B.she had realized C.had she realized D.did she realize
They are the principles, many of them, （）I learned at m...
单项选择题They are the principles, many of them, （）I learned at my mother’s knee.
A.which B.that C.what D.how
The question is not worth（）again and again.A.discussB.d...
单项选择题The question is not worth（）again and again.
A.discuss B.discussing C.to discuss D.to be discussing
How much control you want to turn over to the car may d...
单项选择题How much control you want to turn over to the car may depend on your age and（）.
A.where are you going B.where you are going C.where do you go to D.that you are going
