lift up；switch on；wipe away；add...to...；say hello to；up and down；by accident；in panic；in favour of；in competition with
（1）A Reading Practice section is

added to

added to

each unit in Book Two.
（2）She walked

up and down

up and down

in the room，waiting for her son anxiously.
（3）All those

in favour of

in favour of

this proposition will please say "Aye".
（4）She

wiped away

wiped away

her tears with her sleeve.
（5）

Lift up

Lift up

your voice to make everyone hear you.
（6）Do you think the traffic accident was caused

by accident

by accident

or by design？
（7）Whenever I get to the school gate，I will see my dear headmaster standing there，

saying hello to

saying hello to

every pupil.
（8）There's no problem here except you forgot to

switch on

switch on

the machine.
（9）Office workers fled

in panic

in panic

as the fire broke out.
（10）He was

in competition with

in competition with

10 others，but he did the best.