Choose the correct option

Question 1:the sun sets in the _______
a.north      b.west       c.east        d.south
Question 2:this photo reminds me _______the good old days
a.in     b.at       c.of    d.on
Question 3:choose the word that has the underlined letters pronounced differently. 
a.opened     b.called      c.looked      d.carried
question 4:one kilograms=_______grams
a.1000      b100       c.10      d.10000