________ is known to everybody, the moon travels round the earth once every month．
| A．It | B．As | C．That | D．What |
—Could you be so kind as to close the window?
— ________.
| A．With pleasure | B．Go ahead | C．Yes, please | D．That's OK |
When I am tired with math exercises, I go out for a walk to get relaxed.
| A．should | B．must | C．need | D．will |
We should try every way to develop education, it means slowing down in other fields.
| A．in case | B．even if | C．only if | D．so that |
— Little Tom broke a window in our class.
— I would rather he that.
| A．hasn’t done | B．didn’t do | C．hadn’t done | D．not do |
They are leaving for Hangzhou in ten days — ________, next Friday.
| A．in other words | B．in many ways | C．on the whole | D．on the contrary |