Could I speak to ________ is in charge of International Sales，please? 

—Where's that report?—I brought it to you ________ you were in Mr.Black's office yesterday.

It is uncertain ___ side effects these weight-loss drugs will bring about, although hundreds of thousands of patients have taken it. 

     the players didn’t have a good rest shouldn’t be all excuse for losing the game．

The buses, most of _______ were already full, were surrounded by an angry crowd.