in memory of；first aid；in tears；in disguise；pass away；trip over；a great deal；in a whisper；at midnight；do great harm to

（1）I received a message from my parents that my beloved grandpa had

passed away

passed away

.
（2）On the other hand，we can learn

a great deal

a great deal

from other students we meet in activities.
（3）A parade will be held in our city

in memory of

in memory of

the great day.
（4）It is recognised that smoking

does great harm to

does great harm to

our health.
（5）The old man

tripped over

tripped over

a stone lying on the street.
（6）The knowledge of

first aid

first aid

is a necessity，which can save someone's life.
（7）The girl ran away

in tears

in tears

，scolded by his father.
（8）Some students are still doing their homework

at midnight

at midnight

.
（9）The thief was caught stealing by a policeman

in disguise

in disguise

.
（10）The two students were talking to each

in a whisper

in a whisper

when I came into the room.