7. WITHOUT HER ……….. HELP THEY WOULD NEVER HAVE SURVIVED THE TERRIBLE...

7 . - BAI TAP TRAC NGHIEM VE TU VUNG
BAI TAP TRAC NGHIEM VE TU VUNG
7. Without her ……….. help they would never have survived the terrible ordeal.A. priceless B. worthy C. invaluable D. treasured