1
It takes ... constant effort to become fluent in a language.
n/a
a
an
the
2
Who broke ... vases I brought ?
a
n/a
the
an
3
She has ... charm.
the
n/a
a
an
4
He behaves with ... dignity.
n/a
a
the
an
5
I have two brothers and ... sister.
n/a
a
an
the
6
I am angry because ... service is appalling.
an
the
n/a
a
7
That's ... perfect gift for your uncle.
n/a
the
a
an
8
Would you like ... pear ?
an
n/a
a
the
9
It is going to be ... foggy day.
a
n/a
the
an
10
They own ... expensive cars.
the
an
n/a
a