before
unless
until
because
第1题:
Don't mention it.
That's fine.
Nice talking to you.
Call back again
第2题:
evolution
evaluation
elevation
elaboration
第3题:
did
are doing
will do
do
第4题:
A proportion
The proportion
The number
A number
第5题:
enhance
reinforce
restrain
stabilize
第6题:
ascribes
subscribes
adheres
caters
第7题:
第8题:
第9题:
work at;in
work for;at
work with;in
第10题:
cold
friendly
kind