________ the most important thing in your life?
| A．Do you think what is | B．What do you think is |
| C．What is you think | D．What is do you think |
The fresh air on the farm ___ him ___ his headache.
| A．cured; for |
| B．rid; of |
| C．treated; for |
| D．cured; of |
Once ___ light, the film will be damaged and get useless.
| A．exposed to |
| B．exposed in |
| C．exposing in |
| D．expose under |
The patient has been ___ by nurses night and day since the operation.
| A．attended to |
| B．tended to |
| C．attended on |
| D．tended on |
You can have your computer repaired by John, which is ___ he is ___.
| A．what; expert |
| B．where; expert in |
| C．what; expert in |
| D．that; expert |
After a series of researches, they finally ___ that the pollution was the leading factor contributing to the death of the creatures in the river.
| A．drew a conclusion |
| B．came a conclusion |
| C．arrived a conclusion |
| D．made the decision |