______ the fact that she is still young, she is a remarkably fast runner.
| A．Give | B．Given | C．Giving | D．Gave |
People on the grassland ofis now Kazakstan were the first to achieve both riding and milking horses．
| A．where | B．which | C．what | D．as |
Children under sixteen are not permitted to participate in such kind of activities ________ bad for their mental development.
| A．as is | B．as are | C．that are | D．that they are |
—Do you mind me changing your IP address?
—________. I am used to this one.
| A．Yes, go ahead, please | B．No, I do mind |
| C．I’d rather you didn’t | D．I can’t agree more |
–Putting on a happy face not only helps to make friends, but also makes us feel better.
–_______________.
| A．I’d love to | B．I’m with you on that |
| C．It’s up to you | D．It’s my pleasure |
But for their common interests, they_____ cooperated so smoothly in the investigation of the case.
| A．could have | B．will not have | C．could not have | D．have not |