5.  Complete the following paragraph by filling in the blanks with the help of the given options:

When we read(a)--------------a happy person we smile, (b)-------------if the character (c)---------------angry, we frown.
a.   1.  off                      2. about             3. from                   4. on
b.   1. as                        2. because         3. whereas              4. when
c.   1. is                        2.  became         3. are                      4. am