Can you tell me ______ Sally will play the piano—Yes, at nine o’clock. I think.

When you are planting trees, the trees ________ straight in the hole.

We all see Deng Chao’s performance skills, yet little ________ attention to his singing talent.

I’m very glad to know that my boss has generously agreed to ________ my debt in return for certainservices. [ ]

d me that he had two girl-friends,and neither of _______ knew anything about the other