---- Is there anything about your high school life you wish you’d done differently?
---- I regret that I ______ earlier what I really like doing.
| A．don’t realize | B．didn’t realize | C．haven’t realized | D．hadn’t realized |
My sister met him at the Grand Theatre yesterday afternoon, so he _______ your lecture.
| A．couldn't attend | B．mustn’t have attended |
| C．shouldn't attend | D．couldn’t have attended |
China’s new food law provides for a food recall system _______ producers have to stop production if their food isn’t up to standards.
| A．where | B．that | C．when | D．which |
Can you imagine that rats eat 40 to 50 times _______.
| A．by weight | B．their weight | C．in weight | D．of their weight |
How long do you think _______ the computer company turns out a new product?
| A．it will be that | B．will it be until | C．will it be since | D．it will be before |
---Hello. May I speak to Bill, please?
---- ________.
| A．Bill speaking | B．I’m Bill | C．You are speaking to Bill | D．I’m speaking |