Those who failed to get into the art exhibition ________ disappointed as many of the artists who should have appeared did not come. 

----- Where is Jack?.-----He______ be in the reading room .I saw him just now.

---Lingling says Miss Yu has gone to Shanghai, _____ that be true?---It _____ be true because I saw her in the office just now.

--Whose T-shirt is this? --It       be John’s. It’s much too small for him.

The new law says that people_______ drive after drinking wine.