It is now 11:30 pm, so there are few people and buses on the street, ____________ ?
My computer broke down, but I am not clear ___________________.
--- What do you think of what I said? --- Sorry. I _____ about something else.
---Why not stop __________ a rest? --- Oh, it’s so exciting that I can’t stop ____________ the model plane.
The house is made ______ bamboo and it is made _______ six rooms.
The computer still works well, we _____ buy a new one at the moment.