She has a gift for creating an atmosphere for her students _______allows them to communicate freely with each other.

People were ______ to see the teachers put on the play in such a professional way. [ ]

－He looks very hot and dry.－So______if you had a temperature of 40℃.

The streets here are not so ____ as those in our city.

___ countless failures, the scientist finally succeeded in discovering the chemical substance. [ ]