We cannot figure out _______ quite a number of insects, birds, and animals are dying out.
| A．that | B．as | C．why | D．when |
Many people agree that never in history _________ a more splendid opening ceremony than that of the Beijing Olympics.
| A．there were | B．has there been |
| C．there has been | D．were there |
—Did you catch the train?—No. _________，I would have.
| A．Did I hurry | B．Had I hurried |
| C．If I hurried | D．Should I hurry |
I remember seeing the boy somewhere before, but his name _________— me for the moment.
| A．forgets | B．forbids |
| C．escapes | D．exclaims |
He was _________ when he lost all his money. Luckily, a warm-hearted man helped him generously.
| A．desperate | B．optimistic |
| C．eager | D．cautious |
No sooner _________ home than it began to rain heavily.
| A．we had got | B．did we get |
| C．had we got | D．we did get |