Many people attend various public lectures, chiefly ______ themselves familiar with the latest development of different fields.

We need a more capable leader, ______ with strong will and as well as good humour.

"______ the friendship between our two people last forever!", and with this sincere hope, the president concluded his speech.

______ that no one was ever prepared for it.

_____ the teacher's suggestion, Tom finally found a way to settle the problem.

When do you think ______ start the new attack?

During the tourist season, there are many people wandering in this city to see the old castles _____ in the sixteenth century.

______ which way to take, the little boy behaved like a real gentleman who comforted his sister from time to time.

He doesn't know what to say, for it is the first time that he ______ with a girl.