Though he had tried to climb to the top of the mountain several times, he didn't _____.
Tom does speak Chinese well, but his reading and writing skills leave much _________.
It remains unknown _____the peace talk between the two countries is going to lead.
Every weekend, there is a meeting and our head teacher, with five of us, ____ it.
– Is everybody here? – Not yet… Look, there ____ the rest of our visitors!
Everyone, please remain ____ until the plane has come to a complete stop.