must be stable must be stamped must be started must be starving must be stepped must be sterile must be sterilized must be steve must be still must be stirred must be stopped must be stopped immediately must be stored must be straight must be strange must be strengthened must be stressed must be stressful must be strict must be strictly must be strictly adhered must be strictly followed must be strong must be strong enough must be stronger must be struck must be stuck must be studied must be studying must be stupid must be subject must be subjected must be submitted must be submitted in english must be submitted in writing must be substantial must be substantiated must be successful must be suffering must be sufficient must be sufficiently must be suitable must be suited must be super must be supervised must be supplemented must be supplied must be supported must be suppressed must be sure must be surrendered must be surrounded must be suspended must be sustainable must be swallowed must be swift must be switched must be switched off must be synchronized must be tackled must be tailored must be taken must be taken care must be taken into account must be taken into consideration must be taken seriously must be taken to ensure must be taken to prevent must be taken to protect must be taking must be talking must be taught must be telling must be tempered must be terminated must be terrible must be terrified must be terrifying must be tested must be thankful must be the case must be the center must be the change must be the first must be the husband must be the killer must be the last must be the luckiest must be the one must be the only must be the owner must be the place must be the reason must be the same must be the same as must be the truth must be the work must be the worst must be there