I can't find Sarah． Where is she？
She ______ for tomorrow's Xingcheng Cup speaking competition at home．（ ）
A．preparesB．will prepare
C．is preparing
All the foreign kids don't feel lonely ______ they are alone in China．（ ）
A．even thoughB．since
C．unless
Where is your father, David？ I need his help．
He ______ work．（ ）
A．has been toB．has gone to
C．has been in
My parents often ______ a flower in the green house, but I think I'm a flower in the open air,beautiful and strong．（ ）
A．compare me andB．compare me with
C．compare me to
Doctor Lee, can you help that man in danger first？ I'm afraid he is getting ______．
I will do it immediately．（ ）
A．more and more badlyB．worse and worse
C．more and more bad
All the students are very important to their parents．
Sure． So as a teacher, we can never ______．（ ）
A．give them upB．give him up
C．give up them