____ each other for years, they talked almost the whole night and had a wonderful time.
| A．Not having seen | B．Having not seen | C．Not seen | D．Not to see |
The Yello River is long, but the Yandtze River is __.
| A．even longer | B．long | C．much long | D．so longer |
It was raining ___ when I woke up last night.
| A．heavy | B．heavily | C．heavier | D．heavily |
Soon there is enough force to lift the plane ___ the ground.
| A．off | B．of | C．up | D．out |
You had better give ___ smoking
| A．back | B．over | C．out | D．up |
I heard a terrible noise in his room and went to see what it was all ___.
| A．around | B．out | C．about | D．through |