—Listen! Is that Pingping playing the guitar? —No. It __________be Pingping. He has gone to Beijing.
My brother has been teaching ________ he was 21 years old.
While the alien ________ the museum, the boy called the TV station.
—In our English study, reading is more important than speaking, I think. —I don’t agree, speaking is as ________ as reading.
What ________ you ________ at this time yesterday?
I told him that I ________ my work soon.