1
.
They
have
had
____________________
____________________
homework
in
mathematics
recently
.
2
.
How
____________________
time
do
you
need
to
finish
the
work
?
3
.
There
are
too
____________________
students
in
the
library
.
4
.
Have
you
visited
____________________
foreign
countries
?
5
.
Although
he's
very
ill
,
he
didn't
take
____________________
medicine
.
6
.
____________________
people
know
as
much
about
linguistics
as
John
does
.
7
.
They
say
____________________
knowledge
is
a
dangerous
thing
.
8
.
He's
having
____________________
____________________
of
trouble
passing
his
driving
test
.
9
.
I
spend
____________________
of
my
time
reading
novels
.
10
.
He
knows
a
____________________
English
.
He
knows
enough
English
to
manage
.
