听力原文：I think we need to register for the online ornament store. （A) I think you are wr

听力原文：How often do we need to change the oil in the car？ （A) Every 3 months or every 3,

听力原文：M: We do need another bookshelf in this room. But the problem is the space for it

听力原文：Next Tuesday is the deadline we have to meet.（A)I had to stand up all day long.（B

听力原文：How is the new secretary we hired doing her job？（A)I think we have to hire her.（B

听力原文：At what time is our fundamental research going to start？（A) I think the research

听力原文:Man: I think this is the last time Im buying anything from that shop. I can be