THANK YOU … LOOKING … MY MOTHER WHILE SHE WAS ILL

25. - CAC DANG DE THI TRAC NGHIEM 10
CAC DANG DE THI TRAC NGHIEM 10

25.Thank you

…

looking

…

my mother while she was ill.

A. for / at

B. for / after

C. about / at

D. about / after