vernment officials met the workers and engineersworking on the stadium, most _________ being migrant workers

Was it at the beginning _____ you made thepromise ____ you would do all to help make it

小李想给她妹妹买一件中号的夹克衫，他应该选择 型号的。

The mobile phone has influenced people’s life a lot since it ________.

_____ that Mike was sure to be admitted into the art school. [ ]