--- Is John doing his homework now? --- He should, but he _______ not. He likes playing computer games.
The custom has been___since the 18th century
You___Tv.Why not do something more active?
Although the working mother is very busy,she still ___a lot of time to her children
—What is your plan for the holiday? —I’d like___days with my family___climbing
The way he thought of___the problem is very practical