It is obvious to the students ________ they should get well prepared for their future.[ ]

I saw a woman running toward me in the dark.Before I could recognize who she was，she had run back in the direction______ she had come

106. Where are my keys? They seem to have ____.

I can think of many cases, ________students obviously knew a lot of English words and expressions but couldn’t write a good essay.

How do you usually go to work—On foot. Walking is much__________than driving during the heavy traffic time.