a. Since those houses had been sell, they have always another ledges.
b. I had been reading this magazine since 1950.
c. My brother haven't washed his car yet.
d. We haven't met for a long time.
e. I haven't eat a cake for two days.
f. Where have you been? I have been looking for you everywhere.
g. It haven't rain anymore in Sahara since 20 years.
h. We haven't visited this country yet, even if we went to Bruxelles last week.
i. Did you read this book?
j. I didn't read it because I had no time.