—Would you mind giving your advice on how to improve our business management?
—if you make ____ most of the equipment, there will be ____ rise in production.
| A．不填；不填 | B．the；a | C．不填；a | D．the；不填 |
She showed me a red silk dress _____ online, which cost her only 10 dollars.
| A．to be bought | B．being bought | C．bought | D．having bought |
Having no enough time to practice, the girl wondered whether she _____ pass the driving test.
| A．should | B．could | C．might | D．must |
I recorded the professor’s speech on my cellphone _____ I could listen to it several times later.
| A．in case | B．now that | C．even though | D．so that |
—You seem tired, David.
—Yes. I _____ all day long and can’t wait to go to bed now.
| A．am working | B．had been working |
| C．have been working | D．was working |
She has _____ a great deal of money, hoping that she can travel around the world after she retires.
| A．put on | B．put up | C．put off | D．put away |