英语疑问句型转换;I have already ready the book twice (变否定句)I ______
英语疑问
句型转换;
I have already ready the book twice (变否定句)
I ______ read the book twice ______
The factory opened 10 years ago (同义句)
The factory _______ _______ open for 10 years
He left Beijing in 1998 .(同义句)
He has _____ _____from Beijing since 1998