The fire，believed to due to illegal construction on the building’s roof, was brought
under control after an hour．
| A．have occurred | B．occur |
| C．have been occurring | D．be occurring |
Some 25,000 people were reported ______ in the ever recorded worst earthquake in Iran, which occurred late this month.
| A．were killed | B．to be killed | C．killing | D．to have been killed |
During the tourist season, there are many people wandering in this city to see the old castles_____ in the sixteenth century.
| A．to be built | B．being built |
| C．having been built | D．built |
_______ which way to take, the little boy behaved like a real gentleman who comforted his sister from time to time.
| A．Leaving to wonder | B．Having left to wonder |
| C．Left wondering | D．Left to wonder |
There were many more people who got injured in the big fire than _______.
| A．was reported | B．it was reported |
| C．were reported | D．they were reported |
This robot is supposed to save a lot of labor, but it remains a problem if it ______.
| A．is | B．saves | C．does | D．has |