The old town has narrow streets and small houses _______ are built close to each other . 
#78220
A
in which
B
where
C
what
D
that
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The man I ______ yesterday in the street is my manager. 
#76901
A
paid a visit
B
had a talk
C
met
D
dropped
This is a very convenient place to live in,     is an airport connecting all the big cities.
#75804
A
20 km northwest of it
B
20 km northwest of which
C
northwest 20 km to it
D
northwest 20 km of which