This missile is designed so that once _____ nothing can be done to retrieve it.

There _____ nothing more for discussion, the meeting came to an end half an earlier.

Thebackgardenofourhousecontainsalawn，____verypleasanttositoninsummer.

Ifasubstanceisdissolvedinwaterorheated，itmay（）agas.

If your car _____ any attention during the first 12 months, take it to authorized dealer.