VIET GOT UP LATE, …………. HE COULDN'T CATCH THE FIRST BUS.A. THEN B....

20. - MA TRAN DE DAP AN ANH 9KY I
MA TRAN DE DAP AN ANH 9KY I

20. Viet got up late, …………. he couldn't catch the first bus.

A. then B. so C. as D. when

IV.Find the mistakes