The headmaster introduced ______ to the German visitors before the welcome party．（ ）
| A． |
we |
B． |
us |
C． |
our |
D． |
ours |
Of the two physics problems， Martha just finished ______ one．（ ）
A．the most difficultB．the least difficult
C．the less difficult
Perfect photos! Good skills!
Thank you． They ______ by my Huawei mobile phone． In fact， I am not skillful at all．（ ）
A．tookB．were taken
C．will be taken
I ______ abroad for several years， but I have never regretted my final decision to move back to my motherland．（ ）
A．am livingB．livedC．have lived
So sorry， I took your school T﹣shirt by mistake． But where is _______？
Don't worry． Let me help you find it．（ ）
A．yoursB．hisC．mine
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