-- I have got a headache. -- No wonder. You_________ on the math exercises too long.
—What about the result of your final examination? —Not so bad. Not so good as my parents expected, ________.
However, they can hardly blame me; it is ________ their own fault.
Invention can be ________ as it may suddenly begin just by noticing something usual.
—You don't seem to be quite yourself today. What's wrong? —Oh, I'm suffering from a cold. Nothing serious, ________.
—How do you like your new roommate? —He is too ________. He never shares his snacks with me.