21.—Stay a bit longer, please. It’s been such _______ fun having you here.
—Thank you, but I’ve got _______ early start tomorrow morning.
A. / ; the B. a; an C. /; an D. the; an
22. When _______ about his comments on the mine accident, the mayor said much remained to be done to make it clear.
A. asking B. asked C. being asked D. to be asked
