—Why didn't he attend the meeting yesterday?—__________ he caught a bad cold and now he is in hospital.
________ at the door before you enter my room, please.
________ with care, one tin will last for six weeks.
— Can I have a day off tomorrow, Mr. Johnson? — ________. I can manage without you.
The newcomer went to the library the other day and searched for ________ he could find about Mark Twain.
—Do you have an_______ way to solve this problem? —No, this is the only way, I think.