With a lot of work ______, I have to stay up these days.
| A．done | B．doing | C．to do | D．do |
— What's the matter with you, Lucy?
— After the long walk, my legs _____ and I couldn't go any farther.
| A．gave off | B．gave in | C．gave up | D．gave out |
The task _____ more difficult than we expect.
| A．proved to | B．proved us | C．was proved | D．proved |
_____ his happy look, he must have passed the driving test.
| A．To judge by | B．Being judged from | C．Judging by | D．Judge from |
_____ to too much sunlight, as is generally considered, will add to the potential of catching skin cancer.
| A．Being exposed | B．Exposed | C．Exposing | D．To expose |
There was a nice little gift for everyone, with a suitable poem _____ to it.
| A．attached | B．to be attaching | C．to attach | D．attaching |