补全单词This is a key and t___ is a computer

补全单词This is a key and t___ is a computer 补全单词：（1）he wants a new computer b_____ his computer is old 根据首字母提示补全单词：This is(m )study.There is a (t ） and a lamp on t This is a computer 首字母填空:On the desk t___ is a computer and a g___. 补全对话 a:hello,this is Tom speaking 补全对话.A：Hello!（ B：This is Karen speaking. this is a key.(对a key进行提问) 1.This is( )key and that is( )eraser.2.—Is that a baseball?— there is a key and a book This is a key改为一般疑问句? This is a key.(变为复数)