Water, which seems so simple and common, is_________makes life possible.
| A．what | B．that | C．which | D．how |
You may take _________ half of the cake; they’re exactly the same.
| A．both | B．either | C．any | D．each |
Sorry, I’m late. The car _________down on my way here.
| A．was breaking | B．has broken | C．had broken | D．broke |
250.Mr. Brown works in_________middle school. It is_________school built in the 16th century.
| A．a, a | B．a, the | C．the, a | D．the, the |
_________I know the exam isn’t difficult, I shall not worry about it.
| A．As long as | B．As far as | C．In case | D．Even if |