Xu Xia and her classmates are _______ the US next week.
—What’s this in English?? —It’s _______ orange.
—Can she play the guitar? —No, she_______. It’s too hard for her.
I can’t tell when the house was built _______, but it must be very old.
—Are you as friendly as your sister? —No, I’m not. I’m _______ than her.
— Why don’t you like biology? — Because I think it’s _______________ .