I do not consider her choice of music a happy one.

It was quite right of her to do that.

His theory is widely accepted as valid.

It is improper to impose sanctions upon the union.

In the opening paragraphs I query the validity of so-called supply-side economic strategies.

From our point of view, his proposal is reasonable.

A more plausible proposal is the one Leech presented in conjunction with Emmet's theory.

You ought to think over whether the premise is valid or not.

Any doubts about the validity of this argument are promptly forgotten once we see the data.

It is not reasonable to suppose that this rule is applicable under any condition.

It is reasonable to think that there exist other anomalies in this category.

I should point out that it is necessary to re-examine the validity of Emmet's theory.

You can get good food for a modest sum at the restaurant.