22. —It is high time that we _________ to school.
—If only the alarm clock _________ !
A. should go; rung B. shall go; had rung
C. shall go; rung D. should go; had rung
23. —I’d like to call you at 10 o’clock next Friday morning if it is convenient.
—I’m afraid I __________ an important meeting.
A. will have attended B. will be attending
C. will attend D. would attend
