All the students are talking in the classroom, it’s _________.
Robert is away. He _______ America since last week.
—Why are you packing so many books?—I’ll _______ to the kids in West China.
My Old Classmate also mentioned some important events that _______ from 1993 to 2013.
—I had a really good weekend at my uncle's. —_______.
—Amy, I haven’t finished my homework, so I can’t go swimming with you.—_______.