At the age of nearly seventy, he set off ________ a -mile journey ________ a bicycle
My father ______ me against getting up late again,or he would punish me.
My parents will not ______ my birthday party if I don't do well in my next test.
He ______ have sent the e-mail at an earlier time, but there was something wrong with the network.
—Can Professor Li be in the laboratory?—He ______ be; I saw him there half an hour ago.
My newly-purchased magazine is nowhere to be found. ______ I have left it on the train?