1. The most popular means of transportation in Viet Nam was "xich lo" 20 years ago
=> Vietnamese people used TO USE XICH LO AS THE MOST POPULAR TRANSPORTATION 20 YS AGO.
2. Studying at home would be better than going out
=> I'd rather STUDY AT HOME THAN GO OUT.
3. I can't concentrate on my study because Tom is making noise
=> I wish TOM WASN'T MAKING NOISE SO THAT I COULD CONCENTRATE ON MY STUDY.
4. You've got so much to do today
=> I wish I HADN'T GOT SO MUCH TO DO TODAY.
5.Please don't interrupt me when I am speaking
=> I'rather YOU DODN'T INTERRUPT ME WHEN I'M SPEAKING.