When ______ to recite the text, he still kept _______.

The mother didn't know who ________ for the broken glass as it happened.

---Would you please tell us something about the Group of Eight(G8)?
---Well, G8 is an international organization________the richest countries in the world, five of which are quite small and two of which are island states.

The prize of the game show is ﹩30,000 and an all expenses __________ vacation in China

After completing and signing it, please return the form to us in the envelope _______.

More highways have been built in China, ______ it much easier for people to travel from one place to another.

No matter how bright a talker you are, there are times when it is better ______ silent.

She said she was sorry ________ the train, so she had to stay for another day.

With the second ring road overpass _______ at present in Chengdu, the local citizens have to     choose another way to avoid traffic jam.