Water, _______enough, can change into vapour quickly.
Students should be encouraged to use _________ Internet as _________ resource.
It’s not _________ good idea to drive for four hours without _________ break.
. My neighbor asked me to go for _________ walk, but I don’t think I’ve got _________ energy.
—I am so sorry to have come late for the meeting.—It is not your fault. With _________ rush-hour traffic and _________ heavy rain, it is no wonder you were late.
We went right round to the west coast by _________ sea instead of driving across _________ continent.