Do you know _____old lady in blue?—Yes, she is a teacher of _____university in Beijing.

Listen! Is that Millie singing?—No. It _____ be Millie. She has gone to Beijing.

Mum, can I wear my jeans to school?–No, you ________ wear school uniforms. That’s the school rule.

Whose sweater is this? —It looks like Jean’s. Oh, yes. It’s _______.

When we are in danger, we need to stay_______.- Exactly. Only in this way can we come up with good ideas.