He()(write)her 10 letters since he met her last years.

He is writing a letter now.（英译中)

He made no mention of having met her.（英译中)

Three years have ______ since we last met at the conference for Internet communication in

In "It is so nice to hear from her. Believe it or not, we last met more than thirty years

How can you convince him_____ the death of his wife, since he was with her a few minut

Her parents______her letter last week. They dont know what has happened toA．must receiveB．