11.His alarn clock is (on the dresser).(括号提问)
11.His alarn clock is (on the dresser).(括号提问)
12.It is a key.(改复数句)
13.That is my sister.(同上)
14.I have (a new TV).(括号部分提问)
15.Tim has a gold watch.(改为一般疑问句)
16.The old bikes are under the tree.(改为单数句)
17.The old bikes are under the tree.(变否定句和一般疑问句)
18.I watch it very carefully.(改为一般疑问句)
19.Tim has a gold watch.(改为一般疑问句)
20.There are old bikes under the tree.(改为单数句)