Where is your father，Jenny？
He isn't at home，he ___ to Shanghai on business．（ ）
| A． |
has been |
B． |
has gone |
C． |
went |
D． |
will go |
Yu Gong kept moving the mountains，______ he was very old．（ ）
A．soB．althoughC．but
We ______ the tea set for three years．（ ）
A．have hadB．hadC．have been
The sweater ______ belong to Jim．It's much too large for him．（ ）
A．mustn'tB．can'tC．needn't
There are ______ days in March and the ______day is Women's Day．（ ）
A．thirty﹣one，eighthB．thirty﹣first，eighth
C．thirty﹣one，eight
The Caspian Sea is ______ than any other salt lake in the world．（ ）
A．deepB．deeperC．deepest