_______ from space, we can find 70% of the surface of the earth _______ by water.
| A．Seeing …... covering | B．Seeing …... covered |
| C．Seen ...... covering | D．Seen …... covered |
The best moment for the football star was _______ he scored the winning goal.
| A．where | B．when |
| C．how | D．why |
the forest park is far away, a lot of tourists visit it every year.
| A． | As | B． | When |
| C． | Even though | D． | In case |
There are still many problemsbefore we are ready for a long stay on the Moon.
| A． | solving | B． | solved |
| C． | being solved | D． | to be solved |
________ I have a word with you? It won’t take long.
| A．Can | B．Must |
| C．Shall | D．Should |
I borrow the book Sherlock Holmes from the library last week,my classmates recommended to me..
| A． | who | B． | which |
| C． | when | D． | Where |