1.   A few days later, Valenzuela went underground.

2.   But some of the activity has gone underground.

3.   Delvalle went underground but continued to be recognized by the United States.

4.   Denkins went underground to escape police.

5.   Fresh air bases were set up in Bank Mine and a team of brave and dedicated doctors went underground to assist.

6.   If company policies are too stringent or punitive, couples simply go underground.

7.   Instead of changing its policies, however, the government went underground.

8.   Like the Sleepers of Ephesus, ideas go underground for a few centuries to re-emerge when times are more propitious.

9.   Mina got the tip-off just in time and they became U-boats, went underground.

10.   The redevelopment proposals put forward for the site at first envisaged that all the shopping should go underground.