MRS.HAPPY, THE FOUNDER OF HAPPY’S PIE HUT, REGRETS___ THAT SHE WIL...

12. - BAI TAP TRAC NGHIEM VING TOV KEY
BAI TAP TRAC NGHIEM VING TOV KEY
12. Mrs.Happy, the founder of Happy’s Pie Hut, regrets___ that she will retire and leave her business next yeara. to inform b. informing c. to be informed d. being informed