单项选择题() driving to work, Mr. Lead usually goes to his office downtown by train.
A.WithoutB.Instead ofC.In case ofD.In spite of
单项选择题Nobody could () a satisfactory explanation of the accident.
单项选择题We have to get that car fixed ().
单项选择题When I was a child, I used () to the river and bathe in the evening.
单项选择题As far as the professor (), college students should get into the habit of studying by themselves.