1) I ... the room.
a) has already cleaned
b) already cleaned
c) have already clean
d) have already cleaned
2) They ... in Canada in 1986
a) lived
b) have lived
c) has lived
d) have living
3) I have ... London twice
a) been to
b) be to
c) to been at
d) being in
4) The children ... breakfast yet
a) did not eated
b) did not eat
c) have not eaten
d) has not eaten
5) ... they arrive at your party too early last Friday?
a) Were
b) Did
c) Have
d) Had
6) He ... English grammar before
a) has studied
b) have studied
c) has study
d) has studying
