____—It’s ten to eight.

Listen, there is some strange noise.This machine must be________.— I think so.You must have it checked[ ]

Passengers on board aren’t allowed _____ calls duringtake-off.

are absent-minded while reading, youare more_________ to make mistakes

Today many physical bookstores ________ down with financial difficulties, inflexible management strategies and competitive pressure from online bookstores.