It is well-known ______ a person, especially the old, eats too much he’ll feel uncomfortable.
| A．that | B．when if | C．if | D．that when |
We are bound ______ with difficulties in carrying out this research.
| A．to meet | B．to have met |
| C．meeting | D．having met |
________ is often the case with elder people, my grandma talked about my new hairstyle for at least 50 minutes nonstop.
| A．That | B．Which | C．As | D．It |
It is recommended that the project ________ not be started until all the preparations have been made.
| A．must | B．can | C．need | D．should |
The governor is occupied ________ the meeting at the moment. May I take a message?
| A．with | B．at | C．in | D．for |
We planned to climb the mountain today, but in such ________ bad weather, it seems out of ________ question.
| A．不填； the | B．不填； 不填 | C．a; a | D．a; the |