Email, as well as letters, ______ an important part in daily communication.
| A．is playing | B．have played | C．are playing | D．play |
He suddenly saw Sue _____ the room. He pushed his way ____ the crowd of people to get to her.
| A．across, across | B．over, through | C．over, into | D．across, through |
Leaves are found on all kinds of trees, but they differ greatly_________size and shape.
| A．on | B．from | C．by | D．in |
My sister was against my suggestion while my brother was_____it.
| A．in favour of | B．in memory of |
C．in honour of | D．in search of |
__________ the silence for the pauses, we could hear each other’s breathing and could almost bear our own heartbeats. 
| A．In | B．For | C．Under | D．Between |
No one helped me. I did it all _____myself.
| A．for | B．by | C．from | D．to |