—Could we stay here for the night?—Sorry. I have ____ to hold you all.
What a pity! I missed meeting my boss at the airport because my car was ___in the traffic jam.
The medicine works more effectively ______ you drink some hot water after taking it.
I don’t understand what the engineer means, but I’ve got ____rough idea of ___ project plan.
Could it be in the room _________ we had a talk last night ___________ you left your keys ?
Those books were _______ adults, so it’s unnecessary for teenagers to digest them carefully.