HE SAW THE LORRY (BEGIN) _____ (ROLL) _____ FORWARDS BUT HE WAS TO...

18. - VERB FORM LI THUYET BAI TAP DAP AN
VERB FORM LI THUYET BAI TAP DAP AN

18. He saw the lorry (begin) _____ (roll) _____ forwards but he was too far away (do) _____

anything (stop) _____it.