Over 20% of the students at that school _____ the habit of smoking, which is beyond imagination.
The oil must be used up, ____ the light went out.
I like traveling by sea____ it is not rough.
---Has the train arrived? ---No, it all will be late ___ half an hour.
I wanted two seats____ Madame Gurie for Friday night, so I rang the cinema to seeif I could book two tickets.
For miles around me there is nothing but a desert, without a single plant of tree____.