He offered to _____ her a hand as the suitcase was too heavy for her to carry.
How badly reform is needed was __________ recently by the rising youth crime figures.
__________ gas is needed for the increasing cars to run in the street.
1. He will never __________ though every means __________ tried already.
(2012·湖南) Everyone in the village is very friendly. It doesn't matter __________ you have lived there for a short or a long time.
New technologies have made __________ possible to turn out new products faster and at a lower cost.