Вставьте нужный артикль где необходимо помогите пожалуйста очень срочно

1 My father is ... engineer.

a) a
d) 0
c) the
b) an
2....Ivanovs are very friendly.

c) the
d) a
b) an
a ) 0
3... Black Sea is in ...south of Russia

a) the..., 0
c) the ...the
d) the...,a
b) 0..., the
4.it's...lake. ... lake is deep.

d) 0...the
a) a...the
b) the...the
c) the ...a
5. Usually he gets up ...6 o'clock ...the morning.

d) 0...0
b) on... by
a) in...of
c) at ...in