Some of you may have finished unit one _______, you can go on to unit two

What do you think of your trip to DunhuangOh! It’s one of ___ places I’ve ever been to.

______ difficulties we may face in our life, we shouldkeep calm and take measures to get them over.

The man called his professor for help because hecouldn’t solve the problem by _________.

After months of a frustrating voyage on the rough sea, they eventually came to _____ they called their “dream land”.