Throughout history，the language________by a powerful group spreads across a civilization.
| A．speaking | B．spoken | C．to speak | D．to be spoken |
If Newton lived today, he would be surprised by what _______ in science and technology.
| A．had discovered | B．had been discovered |
| C．has discovered | D．has been discovered |
Pip agreed to give some piano lessons to the girl_______ for a generous gift from her mother.
| A．in nature | B．in return | C．in turn | D．in time |
—Shall we go out for a walk?
— Sorry. This is not the right _______ to invite me. I am too tired to walk.
| A．moment | B．situation | C．place | D．condition |
Nowadays we students are so busy that we don’t have much time for outdoor sports activities, _______we have the interest.
| A．wherever | B．whenever | C．even if | D．as if |
—I ordered a pair of shoes online two days ago and they haven’t arrived yet.
—Don’t worry. You_______ have them by Friday.
| A．could | B．shall | C．must | D．may |