this is a clock变成一般疑问句

this is a clock变成一般疑问句 This is a clock.(改为一般疑问句） This is a clock.(改为一般疑问句)怎样做 This is a book变成一般疑问句 Is this a clock?回答 this is a black car.变成一般疑问句 This is a clock in English 对a clock提问 This is a clock改为否定句 this is my clock怎么变一般疑问句 This is my teacher变成一般疑问句.He is from the U.S.A.变为复数 变成一般疑问句和否定句!（都要写,希望快速回答）1 .This is an egg .2.That is an old clock.3.He...变成一般疑问句和否定句!（都要写,希望快速回答）1 .This is an egg .2.That is an old clock.3.He's my teacher.4.l'm This is a key.(变成一般疑问句,并作否定回答） lim can do it变成一般疑问句 he's a teacher变成一般疑问句 this is an english book 变成一般疑问句l can spell her name变成一般疑问句 l am kate变成一般疑问句 these are maps变成一般疑问句 l like this song变成一 That is a nice clock.改为一般疑问句 This is a clock.用whach 改为选择疑问句 This is a alarm clock 这个句子哪里错了?.. this is an a（ ） clock 如何填空? What's this in English?It is a clock回答中为什么不能会所this is a clock