—I called you yesterday evening, but nobody answered.—Oh, ______ at that time.
Sun Yat-sen was great.He _____ the Qing government with his men.
She’d rather ______ the piano than_____ TV.
______ ask for more books unless you have finished these.
— ______ will you be able to reach the top of the hill? — In ten minutes.
His parents wouldn’t let him marry anyone ______ family was poor.