He tried his best to solve the problem, _____ difficult it was.
The boy _____ he took notes.
–your daughter must be pretty. --- But to tell you the truth, she is ____being such a beauty as you can imagine.
– Why does everyone like him? ---Because he always ______ a good after-dinner joke.
– Do you know where Mary is? --- She has gone away ____ the weekend.
_____ the office work, he came to the sitting room and relaxed a while.