Frank, where have you been? We _____ you since 2 o’clock.
It took a long time for the connection between body temperature and illness ________.
-- Are you going to have a holiday this year? -- I’d love to. I can’t wait to leave this place ________.
-- I’m sorry I’m late. I got held up in the traffic on my way here. -- ________ .
Tony is ______ the guidebook, looking for information about Japan, where he will travel soon.
It is said that the early European playing-cards _________ for entertainment and education.