12．听下面一段对话，回答第 17至 20题．
17．Where is Taylor？
A．On the Great Wall．
B．In a zoo．
C．At a supermarket
18．How many people does Taylor mention to his mum？
A．One．
B．Two．
C．Three．
19．What does Taylor's mum want Taylor to do？
A．Go back to school．
B．Buy some ice cream．
C．Take some photos
20．How does Taylor feel about the trip？
A．Bored．
B．Pleased．
C．Surprised．
