chia động từ ở thì hiện tại hoàn thành
1.there is no more cheese.i(eat)_______it all , i'm afraid
2.the bill isn't right.they(make)_____a mistake
3.don't you want to see this progamme?it________(start)
4.it'll soon get wwarm in here.i(turn)______the heating on
5.______they(pay)_______mony for your mother?
6.seomeone(take)_______my bicycle
7.wait for few minutes,please! i(finish)________my dinner 
8._______you ever(eat)________sushi?
9.she(not/comme)________here for a long time
10.i(work)__________here for three years