HE WAS ABSENT ………..WORK YESTERDAY BECAUSE HE WAS ILL.A. AT B. FRO...

435. - E 10 BAI TAP TRAC NGHIEM GIOI TU
E 10 BAI TAP TRAC NGHIEM GIOI TU

435. He was absent ………..work yesterday because he was ill.

A. at B. from C. to D. of