This is a clock.(改为一般疑问句)怎样做

This is a clock改为否定句 This is a clock.(改为一般疑问句） This is a clock.用whach 改为选择疑问句 This is a clock.(改为一般疑问句)怎样做 Is this a clock?回答 this is a clock .it can tell us time（改为含有定语从句的复合句）this is a clock ___________ __________ tell us time. This is a clock in English 对a clock提问 this is a clock变成一般疑问句 That is a nice clock.改为一般疑问句 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 This is( )clock.l's（ ）old clock.This is( )clock.l's（ ）old clock. 1.This is my ring.(改为一般疑问句)（ ）（ ）（ ）ring?2.It is a clock.(改为否定句）It( )（ ）（ ）a clock.3.Are those her notebooks?(改为单数句）（ ）（ ）（ ）（ 4.That is a green pencil.It's Mike's.（合并为 This is a book 改为复数句 This is a pear.改为复数句 this is a book改为复数形式 This is a dress.改为复数形式