He was ________ weak ________ he couldn’t go on working.
______ the blender. Let’s make some milk shake.
--Will there be money in 100 years?-- ________. Everything will be free.
Their school days are busy and the children don’t get home _____7 o’clock p.m.
The little girl likes to _______ as an angel(天使), so she asks her mother to buy her lots of clothes.
We all know trees play an important role in _______up the air.