Lily is so smart in her class．She usually spends the_____time and makes the_____mistakes in her homework．
| A．least,least | B．fewest,least |
| C．fewest,fewest | D．least,fewest |
—How often do you see your grandparents?
—_______.
A. Five days B. Once a month C. In a week
I usually go to school on _______ foot.
A. a B. the C. /
Wang Yaping is the first woman astronaut who taught lessons in space. Do you know _______?
| A．where is she from | B．where does she come from |
| C．where she comes from | D．where he comes from |
You aren’t supposed to ask the boy to buy things for you. _______, he is too young.
| A．In general | B．After all | C．To my surprise | D．To start with |
—What a hot day it is! —So it is. I think an umbrella can help you _______ the heat.
| A．keep on | B．keep out | C．keep in | D．keep up |