time you have finished reading this book, yourmeal ______ cold

meeting, they sat very_____ and had a _____ talk, but I didn’t know what theywere talking about.

Pollution has reached ______ high levels in some urban areas, which is quite worrying [ ]

How long can I _________ this book —Five days. But you must return it on time.

Earth is believed ____ by an object the size of Mars at some point in the distant past before its surface cooled.[ ]