If Becky hadn’t missed the bus, she______late for the lecture.

It is important to make new laws and create international standards for these laws similar to _______ concerning international airspace.

,when one makes a large purchase, he shouldhave _____ opportunity to change his mind

The students were ________ over the ________ problem，listening to the teacher with a ________ expression on their faces.

ould report any incident, ______ minor it is