Our teacher praised Jack ____ helping a blind man cross the busy road.

MrsWhite showed her students some old mapsfrom the library

I’m leaving tomorrow.— Oh, what a pity! I won’t be able to see you offI __ a tele-conference the whole morning

He appears to be strong and healthy but, __________ he suffers from a weak heart.

e near future, more advances in therobot technology _____by scientists.