at last make a good impression concentrate on leave......alone look forward to take notes in company with prefer......to......clean up sign up for be attracted to be curious about addicted to graduate from in advance
（1）It is not unusual for teenagers of your generation to

be attracted to

be attracted to

computer games and the online world.
（2）The guy next to Han Jing tried to talk to her the whole time，which made Han Jing couldn't

concentrate on

concentrate on

the experiment.
（3）Try and smile.The key to

making a good impression

making a good impression

on others is to show that you are friendly.
（4）Mike hoped his little niece could

leave him alone

leave him alone

while he was trying to finish his homework.
（5）Tom wants to improve his oral English by talking with the native speakers.So，he is

looking forward to

looking forward to

meeting the new exchange student.
（6）Children like exploring the world.They

are curious about

are curious about

everything around them.
（7）I

prefer

prefer

staying at home

to

to

going outside during the vacation.
（8）Some students even become

addicted to

addicted to

the internet and cannot focus on school and family life.
（9）After Adam considered his interests and the teacher's advice，he

signed up for

signed up for

many suitable courses.
（10）After

graduating from

graduating from

the university，Professor Yuan devoted himself to cultivating the hybrid rice.