It is most _____that the environmentalists will come to the area to investigate the possible damage caused by the serious pollution

_______ jeans were invented over 100 years ago, theyre still in fashion today.

The number of people invited __________ sixty, but a number of them ______ not present for different reasons.

Last month, the Japanese government expressed their thanks for the aid they ______ from China

She_________ Tibet the day before yesterday.