Some young people these days just ________ go out oftheir homes to contact the real world

The young lady from Australia has a gift for creatingan atmosphere for her students _________ allows them to communicate freely witheach other.

________ careful you are， ______ mistakes you’ll make.

I was walking along the street and all of a sudden, a car cut in and knocked me down．— You can never be ______ in the street．

The students are made until midnight.