The national congressman wearing traditional clothes, in _______ hotel-room I just interviewed him, comes from a remote mountain village in West China.
He is known _____ a scientist and famous _____ his research on rice.
.I live at a busy street and the loud noise nearly ____me mad.
There is no doubt _____ they will win the game.
______ he has gone abroad is not true.
_______ is certain that practice makes perfect.