___________ in hard seats for 6 hours, we finally stepped out of the train tiredly.
| A．Sitting | B．Having sat |
| C．To sit | D．Sit |
So little known _____ that soldiers had to ask for a guide.
| A．by this earthquake - stricken area |
| B．this earthquake - stricken area |
| C．was this earthquake - strcken area |
| D．this earthquake - stricken area had been |
This monument was built in honor of the scientist who was believed ______ the first telephone.
| A．to invent | B．to have been invented | C．to have invented | D．having been invented |
I have kept that picture ______ I can see it every day,as it always reminds me of my university days in London.
| A．which | B．where | C．whether | D．when |
I wonder what notes he made in the back of his diary ______ things to mend or replace.
| A．by | B．in | C．with | D．of |
---Why is the librarian looking so hard at me?
---You _______ to read aloud in the reading room.
| A．don't suppose | B．haven't supposed | C．are not supposing | D．are not supposed |