On April 6,1896, crowd of over 60,000 people watched the King of Greece open first modern Olympic Games.
The scientists are studying the effects of human activities______the environment.
The law about banning using thin plastic bags came into_____from 1st Jane this year.
I have offered to work for the store owner _____ one night’s stay.
Tom said he had been working for three hours, _____ ,evidently, was untrue.
---May I use your cellphone? ---_____. We are good freinds