Scientists say it may be five or ten years___________ it is possible to test this medicine on human patients.
I don't like the newspaper ______ people’s love of scandal.
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.