You must wear strong shoes and socks ____ you climb the mountains. A.whatever B.wherever C.whenever
We must do something so that there will be _____ pollution in our city.
______ 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.