All________made______possible for China to succeed in carrying on its reforms and open-door policy.
| A．what happened; it | B．what happened; that | C．that happened; it | D．that happened; that |
On the wall of his office _________the paintings of early French artists.
| A．hanged | B．hanging | C．hang | D．are hanged |
It was several years later________ an American ship paid the first official visit to the island.
| A．since | B．when | C．that | D．as |
There are many fine buildings on _______sides of the streets.
| A．every | B．both | C．all | D．either |
At no time does the salesgirl get up late in the morning, for she is always too busy_______ a good rest.
| A．to take | B．taking | C．took | D．taken |
_______ any need for us to discuss the problem again since it has already been removed？
| A．Has it | B．Has there | C．Is it | D．Is there |