I have a lot of books, half of __________ novels.
| A．which | B．that | C．whom | D．them |
---You seemed to have been impressed by his songs.
---Well, not exactly so. It was his way of singing____ his voice that really impressed me.
| A．rather than | B．as well as | C．but also | D．together with |
So many uses have been discovered for this wood ____ the supply of white pine is becoming smaller and smaller.
| A．then | B．what | C．that | D．which |
The truth, Sir, is that the old man____ across the street when my car hit him.
| A．was to walk | B．had been walking | C．walked | D．was walking |
---Where will you start your work after graduation?
---Mmm, it's not been decided yet. I ____ continue my study for a higher degree.
| A．need | B．must | C．would | D．might |
I wrote to my parents once a week,____ I was too busy with my teaching work.
| A．it | B．unless | C．when | D．as |