A: Listen! Is it Linda singing in the next room? B: No, it __________ be her. She is still in Shanghai.
Maria called him three times yesterday, but nobody answered.
—Do you know __________ in China tomorrow? —In the morning.
The lovely postcards __________ to Ann last week.
They __________ each other for more than 5 years.
—Where is Miss Wang now? —Look, there she is! She __________ with many old people.