After Enron's failure, normal financing arrangements like these have become questionable.

During the hot summer months, the water flowed very low and slowly and the water quality was becoming questionable.

In recent years agriculture in Britain has suffered economic setbacks and the viability of hill farming has become questionable.

Producers clearly see no end in sight, and the results are increasingly becoming more questionable.

On the contrary, the highly questionable decision has become even more questionable, considering the deterioration the White Sox have endured the past two years.

But as the impact of star power has become increasingly questionable, studios have continued to pay huge sums to actors and actresses.

Visibility of earnings growth, he concluded, has become questionable.

His hospital alibi had become questionable and his enemies wanted him dead.

And even that safety was becoming questionable.

However, local astronomers still use it to predict the weather for farmers, although their authority is becoming increasingly questionable.