1.this jacket is rather dirty. it a.to have been cleaned b.cleaning c.being cleaned 2.i'll never forget you. it was the most important day in my life. a.to have met b.having met c.meeting 3.he was made at home. a.stay b. to stay c.staying 4. my parents are used to in the countryside. a.to live b. living c. to have lived 5.my father is thinking of a car. a. buy b.to go c.buying 6. i'm having difficulty in at night. a. sleeping b. to sleep c. sleep 7. i remembered the door before i left home but i forgot to shut the windows. a. locking b.having locked c. to lock