The water supply has been cut off temporarily because the workers ____ one of the main pipes.
I’d like to know _____ Chinese.
Rather than ______ his own car work, he preferred ______ public transport.
The terrible shaking of the building woke up all the people _______ were asleep.
You should always exercise, ______ it’s only ten minutes every day.
____ large number of children have joined the book club and ____ number is increasing.