a couple of，used to，set up，for the first time，have access to，make sure，find out，pour into，lack in，add up to
（1）Sales moved upwards

for the first time

for the first time

this year.
（2）The man glanced over his shoulder every now and then to

make sure

make sure

that he was not being followed.
（3）The police looked into the case to

find out

find out

who was the murderer.
（4）He

set up

set up

a firm of his own soon after he graduated from college.
（5）I

used to

used to

get up early and take an hour's walk before breakfast.
（6）Students must

have access to

have access to

a good library.
（7）People

poured into

poured into

the square from all parts of the city.
（8）Critics have found them to be somewhat

lacking in

lacking in

emotional depth.
（9）As I've been lying wide awake for

a couple of

a couple of

hours，I know I've come in for it again tonight.
（10）The numbers

add up to

add up to

exactly 100.