AFTER ALL HE HAS DONE FOR US, IT WOULD BE VERY ………… OF US IF WE DID...

BỘ ĐỀ THI THỬ ĐH – CAO ĐẲNG NĂM 2011 MÔN ANH VĂN MÃ ĐỀ 025 DOC

6. After all he has done for us, it would be very ………… of us if we didn't do this for him now. ( help )