assign
加入词篮assignment
homework
study
science
memory
remember
note
comment
note
record
recorder
diary
journal
episode
learn
learned
learning
attention
perceive
mind
concentrate
concentration
absorbed
struggle
text
textbook
book
booklet
bookmark
page
bind
scrape
rubber
rub
pen
ink
pencil
mark
underline
notebook
emphasize
emphasis
highlight
stress
exercise
paper
question
answer
respond
reply
response
key
problem
puzzle
difficult
difficulty
solve
solution
resolve
dissolve
saying
saw
quote
quotation
handwriting
practice
practise
notebook
revise
review
professor
mathematical
mathematics
arithmetic
add
addition
plus
and
subtract
minus
multiply
multiple
double
twice
divide
division
difference
value
function
functional
variable
number
negative
fraction
percent
percentage
equal
equation
