The letters for the boss. __________ on his desk but he didn't read them
until three days later.
| A．were put | B．was put |
| C．put | D．has put |
______ a girl put her card into a machine outside a bank in London on January 19, 1968 means the world’s first ATM was born.
| A．Whether | B．When | C．How | D．That |
_____, the environment of our city has been greatly improved.
| A．Paid attention to | B．Being paid attention to |
| C．Paying attention | D．Having paid attention |
Never are we allowed to pursue our economic development______ destroying the environment.
| A．at the risk of | B．at the cost of |
| C．at the end of | D．at the mercy of |
The war and sufferings it caused by the war seventy years ago are the old woman’s ______memories, which can never be forgotten.
| A．poor | B．current | C．vague | D．permanent |
When he kept silent, Mr Johnson ______ his approval for our plan.
| A．would show | B．is showing |
| C．was showing | D．has shown |