问题
people have always been curious ______ howliving things on the earth exactly began.
A:is made of
B:at
C:of
D:about
B:at
C:of
D:about
正确答案是：
同类题型
Would you like some more beef–________. I don’t want to eat any more.
I’ll go to the railway station to ______ you ______.
A:Why did you only order vegetablesB:The doctor told me________too much meat.
Have you ever been to New York? — Do you mean the one which is _____ skyscrapers? [ ]
Don’t put the waste on the ground—Oh, I’m very sorryI ________ the dustbin（垃圾箱） there