1.The children won’t watch TV _______ their teacher allows them to do that.

A. if        B. when        C .unless       D. whether

2.He_____ go to the birthday party if the host________ him.

A.won’t; isn’t invited              B .won’t ;doesn’t invite  

C. doesn’t;won’t invite             D. doesn’t ;won’t be invited

3.The man was found______ this morning, but nobody knew when he_____.

A.dead; death                   B.dying ;died        

C.dead ;died                        D.death;dead

4.It is reported that many important leaders will _____us in the charity concert.

A. take part in    B. join       C . join in     D. attend