— Will you go to Sandy’s birthday party? — I won’t go unless Tony______．
A．was invited B．has invited
C．is invited D．will be invited
—_____will you stay here? —Until tomorrow afternoon．
A．How long B．How soon
C．When D．How often
My shoes are worn out．They need_______．
A．to repair B．be repaired
C．repaired D．repairing
_______ Andy was playing，his mother came home．
A．While B．Until C．Although D．Since
一Look! There is a small bridge on the river．
一It ________ two days ago．
A．built B．was built
C．has built D．has been built
It is said that the gravity on Mars is only about __________ of the gravity on earth．
A．three-eighths B．third-eighth
C．three-eighth D．third-eighths
