---Why are you worried?--- I’m expecting a call from my daughter. She _______ abroad for three days.
Liza speaks English very well,_______she doesn’t know Chinese.
There are _______ students in our class, twenty-two boys and eighteen girls.
—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.