— Will you go to Sandy’s birthday party?— I won’t go unless Tony______．
A．was invited B．has invited C．is invitedD．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 n
eed_______．
A．to repair B．be repaired C．repaired D．Repairing
He hadn’t worked hard at his lessons．_______, he failed in the exam．
A．As a result B．However C．Otherwise D．Since then
— When did the meeting begin?
—At four o’clock．It ______ for 15 minutes．
A．was onB．beganC．has been onD．has begun
It is said that the gravity on Mars is only about __________ of the gravity on earth．
A．three-eighthsB．third-eighthC．three-eighthD．third-eighths
