1.   The disease can be very serious in adult animals.

2.   The problem of air pollution is especially serious in urban areas.

3.   The women wore dark colours and shawls and even small boys looked uneasily serious in their heavy best clothes and cloth caps.

4.   There was one rather serious minus in the countdown.

5.   Sara realised then that he was perfectly serious in his invitation.

6.   Also, I will give her the telephone numbers of individuals who seemed serious in offering a legitimate bid for the jersey.

7.   And they are dead serious in their determination to exploit the opportunity he gave them.

8.   At least in cross country, the only mountain bike discipline in the Olympics, the sport is more serious in its approach.

9.   A Northwest executive who requested anonymity said that the pilots did not appear to be serious in the recent talks.

10.   Bush also appeared on the defensive when a questioner said he appeared less than serious in the previous debate when he discussed the use of capital punishment in Texas.