It is a long time _____I saw you last——YesAnd it will be a longtime _____ we see each other again

The Iranian government is accused of _______ some terror organizations in the Middle East by the United States, who can’t not produce firm evidences to prove it. [ ]

The club accepts everyone who wants to join ________ their age and sex.[ ]

Carelessness always contributes _______ car accidents. Therefore, drivers are advised to concentrate their attention _______ driving.

She looked at the pretty vase I bought at the market and said it was a real _____.