This mountain range has many high（）and fertile valleys.

Yesterday was such a（）day we decided to go for a drive.

That is（）behavior and nobody likes it.

You have your choice of three（）of ice cream.

Rock music usually（）the young people in most countries.

During these ten years, many new methods have been（）in the field of foreign language teaching.

We all（）your coming to help us.

His proposal is（）to all of us and you do not need to tell us more about it.

What they are（）about is which comes first: the chicken or the egg?

Under no（）will I go there again.