Only ______ a human being.
| A．when is it hungry a lion will attack |
| B．when it is hungry a lion will attack |
| C．when it is hungry will a lion attack |
| D．when is it hungry will a lion attack |
— It rained cats and dogs this morning. I’m glad we took an umbrella.
— Yeah, we would have got wet all over if we _______.
| A．hadn’t |
| B．haven’t |
| C．didn’t |
| D．don’t |
No one _____ be more generous; he has a heart of gold.
| A．could | B．must | C．dare | D．need |
If he had spent more time practicing speaking English before, he _____ able to speak it much better now.
| A．will be | B．would be | C．has been | D．would have been |
--Why are your eyes so red? You _______ have slept well last night.
---Yeah, I stayed up late writing a report.
| A．can't | B．mustn't | C．needn't | D．won't |
When I was a child, I ______ watch TV whenever I wanted to.
| A．should | B．could | C．must | D．need |