___genes,intelligence also dependson an adequate diet,a good education and a decent home environment.[ ]

______ will you come back, Mum —Inten minutes.

You have failed two tests. You’d better start working harder, ____ you won’t pass the course.

_these coins are of different shapes, sizes andcolors, they all date back to a long, long time ago.

There was something wrong with the network， or the e-mail____ earlier