The Big Ben, _______ we visited during a recent trip to Britain, is one of London’s tourist attractions.

______is going to go climbing please gathers at the school gate at 8 on Sunday morning.

The old professor travelled from one school to another, _______ first-hand information about the education situation in China. [ ]

Not until I ________ to work ____ how much time I had wasted.

he officers led their men to _______in battle, so all the villagers came out to award them with food and drink onboth sides of the road.