____ has been proved again and again that ____ is said in the ads greatly affects people’s impression of the products.

30When you arrive, I ______ in reception for you

How was your vacation—It was great. We the mountains.

he group discussion is nearing its end, make sure to ______it with important points.

._______ great achievements the future may have in store for China, it’s likely that many of them will be born in northwestern Beijing.