THIS BOOK WAS WRITTEN BY A WELL-KNOWN WRITER. IT IS WORTH ……….A. T...

29. - USEOFENGLISH ON KIEM TRA GV ANH
USEOFENGLISH ON KIEM TRA GV ANH
29. This book was written by a well-known writer. It is worth ……….A. to read B. reading C. read D. having read