______ it have been the failure to pick up directions from the ground control that caused the air crash?
Everybody in the village likes Jack because he is good at telling and ____ jokes.
Tom sounds very much ______ in the job, but I’m not sure whether he can manage it.
Tom was very sick with a bad cough, ______ he could neither eat nor sleep.
—— Excuse me! —— ______? —— how can I get to the nearest post office?
---- What a beautiful day! ----- Yes, it’s _____ that I’d like to take a walk.