My brother is honest boy, he never tells a lie.
Tom ________ a letter from Terry for a long time.
It’s hot. Would you mind my _____ the window? —— _____.Do it as you like, please!
Although Fleming discovered Penicillin, it was over a decade ______ someone else turned it into the great drug of the
Who’s your science teacher this term?–Mr. Wang. _______ is a good teacher.