The retired professor, _____ in his new book in the past three years, hasn’t realized the decline in his health.
| A．involved | B．being involved | C．having involved | D．to be involved |
We could have done something meaningful in the time it ________ to watch that boring movie.
| A．has taken | B．took | C．had taken | D．takes |
The farmer used wood to build a house ________ to store grain.
| A．that | B．in which | C．which | D．what |
The little girl ________ a foreign language fairly quickly.
| A．picked up | B．got up | C．stepped up | D．made up |
________ a bike, she cycled home.
| A．Bought | B．To buy | C．Being bought | D．Having bought |
–Let’s take a coffee break, shall we?
–I wish I ________, but I have a really tight schedule.
| A．can | B．shall | C．could | D．should |