HE FAILED THE EXAM ... HE WAS LAZY.A. DROVE B. HAVE DROVE C. WAS...

30. - 30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

30. He failed the exam ... he was lazy.

A. drove B. have drove C. was driving D.you have been

A. unless B. if C. because D. while

driving