[img]2017m4s/ct_etoeiclm_etoeiclzp_0501_20170401[/img] [br] [originaltext](A)Th

(A)They’re opening their backpacks.
(B)They’re getting out of a vehicle.
(C)They’re lined up alongside a bus.
(D)They’re walking across the street.

(A)A man is handing out lab coats.
(B)A microscope is being adjusted.
(C)A test-tube is being set down.
(D)A woman is writing on a notepad.