suppluy the correct vevb form 1.They................................(be)pen pals for a long time 2.Would you like(come)........................to my house next week 3.we used to..............(write) to each other every mouth when we..............(be) at secondary school 4.Tomorrow, I(study).................................unit 2 5.we shouldn't(eat)........................sweet food 6.We must(stay)................................in bed when we have a flu

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