Complete the gap with can, can't, could or couldn't.
a Sue _______ play the piano really well.
b I _______ remember his name. do you know it?
c you _________ take your driving test until you are 18.
d We ________ go now. It's stoopped raining.
e We ________ go to the party because we went to a wedding.
f Last week he ________ come to school because he was ill.
g Not many people ______ run a marathon is less than theree hours.
h I ________ swim even when I was a bady.
i You _______ install this program witthout a passaword.