. Newly-developed materials for spaceships can _________ extreme weather conditions.
| A．hold | B．support | C．stand | D．carry |
They wanted to ___ our food supplies.
| A．cut down | B．cut away | C．cut out | D．cut off |
___ is better to build house on rock not on sand.
| A．That | B．It | C．This | D．What |
Is the museum ___ we visited last year?
| A．the one | B．where | C．which | D．that |
She needs the work ____ before tomorrow.
| A．done | B．be done | C．doing | D．be doing |
--Did a letter come for me?
--Yes, ___ came for you this morning.
| A．that | B．it | C．one | D．the letter |