Who is the young woman______yellow? [ ]

_______ of the materials I listened to at the beginning of the exam _______ easy.

I hear Yang Yan made an English speech at the graduation —ceremonyyesterday. _______and_______[ ]

When did you ____ the top of the mountain?—At 11;45 a.m.

If he takes on this work, he will have no choice but ______ an even greater challenge.＿