—Helen, do you like math?—No, I don’t. It’s __________.
—________ Tom and his mother often watch tennis games on TV? —Yes, they ________.
Simon’s father is talking _______the teacher ______his son’s English.
Mike is good at _________. He can ________ well.
Jane likes ________ and she _________every week.
There is ________“s” and ________“f”in the word “useful” .