The fire _______ before the fire-fighters arrived.
| A．has been put out | B．was put out | C．had put out | D．had been put out |
It was after he got what he had wanted very much _______ he realized it was not important.
| A．when | B．that | C．since | D．as |
This year this factory has produced ________ cars as it did last year.
| A．as more than three times many | B．more than three times many as |
| C．more than three times as many | D．three times as more than many |
The famous writer our Chinese teacher often referred ________ at our school yesterday.
| A．to arrive | B．arrived | C．to arriving | D．to arrived |
Please go ________ the ship quickly. There is only ten minutes left.
| A．board | B．broad | C．aboard | D．abroad |
The question came up at the meeting _________ we had enough money for our research.
| A．whether | B．that | C．if | D．what |