This new teaching approach is specially ______ to develop children’s problem-solving skills.
We _________ the difficulty together, but why didn’t you tell me?
________ 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.