—Is Mr. Smith over there?—It ________ be him. He has gone to Beijing on business.
Can you help me ______ my homework?
Jim and Sally ______ in the morning.
---When is Jay’s concert? --- It’s ______ three o’clock ______ the afternoon of July 18th.
--- How does he go to Chong Qing? ---________________.
Tom can play the guitar, ______ he can’t play it ______.