_____ in every aspect of his company’s business, Paul made himself busy day and night.
| A．Being involved | B．Involved | C．Involving | D．To involve |
If our marketing plan succeeds, we _________ the sales by thirty percent next year.
| A．would increase | B．will increase |
| C．would have increased | D．will be increasing |
Supposing you _________ the lottery, what would you do with the money?
| A．would win | B．have won |
| C．had won | D．won |
Children’s brains cannot develop properly _________ they lack protein.
| A．because | B．since |
| C．when | D．unless |
We all write ____________ even when there's not much to say.
| A．now and then | B．by and by |
| C．step by step | D．more or less. |
Experts and teachers all think that failure is not __________ a bad thing to some extent.
| A．greatly | B．necessarily |
| C．definitely | D．fully |