Eric arrived on time, _______ it was the rush hour.
A. though B. because C. while D. unless
（题文）The Chinese people are ________ the cause of communism(共产主义) all the time.
A. fighting with B. fighting against C. fighting for D. fighting at
It is our hope that we can live in a ________ world and say goodbye to wars forever.
A. similar B. peaceful C. familiar D. natural
（题文）These books ________ me.
A. belong to B. belongs to C. is belonged to D. are belonged to
We couldn’t play outside ________ the rain.
A. because B. because of C. because for D. since
Missing the train means ________ for another hour.
A. to wait B. wait C. waiting D. waited
