单项选择题
A.Please don't worry. B.I don't think so. C.Why not? D.It's very nice.
Is Mary there?（）A.Speaking. B.Im not Mary. C.Who ar...
单项选择题Is Mary there?（）
A.Speaking. B.I'm not Mary. C.Who are you? D.Mary is well today
Is Linda good at singing? Yes, she is. We often hear he...
单项选择题Is Linda good at singing? Yes, she is. We often hear her（）in her room.
A.to sing B.sang C.sing D.sings
In some parks visitors are requested to keep（）the grass...
单项选择题In some parks visitors are requested to keep（）the grass.
A.aside B.away C.out D.off
