用所给单词正确形式填空。
go have play watch sleep do
如图所示是某电子秤的结构示意图，其中P是一个可以紧贴AB 滑动的金属滑片，S为自动控制开关。闭合开关S，秤盘内不放物体时，电子秤刻度表示数为0；在秤盘内放入物体时，就可以从电子秤刻度表上读出该物体的质量;当被测物体的质量超过电子秤量程时，开关S自动断开，电子秤无示数。则下列判断正确的是 ( )
⑴My father is practising English.____ A.
⑵I'm going to study Geography in middle school.____ B.
⑶He is going to ride his bike to school.____ C.
⑷My friend Sam is going back to the UK.____ D.
⑸It's time to have lunch.____ E.
