Students ________ remain in their seats until all the papers have been collected.

The teacher will give us a talk on how _____ English well.

s for yourhelp, but can you do me one favor, please— ___________, sir What’s it then

We often think of the days _____ we spent together on the island

(2013·乌鲁木齐高三第一次诊断性测验)That scientist ________ work is successful has been made a model worker.