Choose the correct option to complete each sentence.
1 I on this all week and I still haven’t finished.
a am working
b have worked
c have been working
2 If I the answer, I would tell you.
a knew
b know
c would know
3 I think I my car washed tomorrow.
a had
b have
c will have
4 What in five years’ time?
a are you doing
b will you be doing
c will you do
5 I on the light if you are cold.
a would switch
b will switch
c am switching