—May I use your computer, Mr WU?　　　—______．

A. Yes, you may not   B．No, you may     C．Yes I may     D．No, you may not

This dress still looks pretty on you, _______ it is out of style．

A．but   B．though   C．since   D．unless

— Is Lily good at singing?　　　—Yes , she is．We often hear her_______ in the next room．

A．sing   B．to sing  C．sang  D．Sings

— 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 need_______．

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

After a short time, the bad news had ______all over the city and everybody knew it．

A．showed    B．spread   C．covered    D．Explored