1-is
2-are
3-are
4-is
5-isn't
6-are
7-are
8-is
9-is
10-is
11-are
A/ ...........I have to
b/I had to wait
c/ has to wear ...........he hasn't
d/We don't have to wake up ............
e/ ..............they have to take it
f/ My sister has to study...........
g/.........you have to get.......
h/ ...........I have to care about........
i/ Nick has to take ........
k/ ..........I had to wear .......
1 has
2 have
3 have
4 has
5 has
Arrived
Been
Bought
Come
Eaten
Flown
(Got) gotten
Gone
Had
Left
Kept
Lost
Met
Put
Returned
Ridden
Seen
Taken
Told
Traveled
Tried