We can ______ useless information in the article to make it easier to understand．（ ）
| A． |
cut up |
B． |
cut out |
C． |
cut into |
D． |
cut off |
"Krystal， do you know how tea is produced？"
"Yes． When tea leaves are ready， they are picked by hand and then_____for processing．"（ ）
| A． |
send |
B． |
are sent |
C． |
were sent |
In difficult times， there are always national heroes_____step up and bring people hope．（ ）
| A． |
whom |
B． |
which |
C． |
who |
Even if we learn something well， we will forget it_____we use it．（ ）
| A． |
while |
B． |
until |
C． |
unless |
With the improvement in transportation， students in some small villages no longer go on ropeways_______rivers to schools．（ ）
| A． |
to cross |
B． |
crossing |
C． |
crossed |
"Tara， what's your favorite_____？""Orange． Half of my dresses are orange．"（ ）
| A． |
fruit |
B． |
drink |
C． |
color |