政府已承诺提供援助，但迄今为止，尚未有具体的支持到来。

The government has promised aid, but so far, no concrete support has been ___forthcoming.

除非承诺的资金很快到位，否则该项目将不得不取消。

Unless the promised funds are ___forthcoming soon, the project will have to be cancelled.

尽管反复请求，当局仍未就此事提供更多细节。

Despite repeated requests, no further details about the incident have been ___forthcoming from the authorities.