Abraham Lincoln once said, “Whatever you are,（ ）a good one.
How （ ）we are of the Great Wall!
Can she（ ）English or French?—I don’ t know.
Why didn’t Susan come to see us yesterday as she promised?
A.She must be busy
B. She might have been free
C.She must have been busy
D.She can’ t be free
ls this your pen?
No, this is not（ ）pen.It is hers