Wind power is a source of energy we may return in the near future.
| A．on which | B．by which | C．to which | D．from which |
___ from space, the earth with water ___70％ of its surface looks like a "blue blanket".
| A．Seen ;covered | B．Being seen; covers |
| C．Seeing; covering | D．Seen; covering |
I'm afraid that I can't make myself ___ because of my poor English.
| A．understand | B．understanding | C．to understand | D．understood |
—Do you think it a good thing if too high house prices can't be brought under control .
—________，it was bad.
| A．In other words | B．On the other hand |
| C．On the contrary | D．In the meanwhile |
On the bank of the river, we found him _______on a bench, with his eyes_______ on a kite in the sky.
| A．seating; fixed | B．sitting; fixing |
| C．seated; fixing | D．sitting; fixed |
It is the fact ______he doesn’t know his own birthday ______surprises us all.
| A．which; which | B．that; that |
| C．which; that | D．that; which |