如果一个数的立方根是它本身,这个数一定是[ ]
A.1或-1
B.1或0
C.-1或0
D.0、1或-1
D
I am too glad _____ you.
A.to see
B.seeing
C.saw
D.at seeing
---Did you have fun _____________ on your last day off?
---No, I didn’t. there were too many people and it was really crowded.
A shop B shopping C to shop D shopped