Public service ads, also PSAs, often _________ for free, _________ to educate people about health, safety or any other problem that affects public welfare.
The film “A World without Thieves” a great success and brought in a large profit to the cinema .
It’s quite obvious that the aging population in China will cause _____ heavy pressure on _____whole society in the future.
35.It is said that dogs will keep you _____ as long as you want when you arefeeling lonely.
.The artist made up his mind to devote all he could ____his English beforegoing abraod.
Although this medicine can cure you ____ your illness, it has a bad effect _____you.