Is_____ necessary ____them to stop ________ every two hours?

given three books on sewing, thefirst ______ I really enjoyed.

There is going to _______ a basketball match thisweekend.

Our country ______ a lot so far .— Yes. I hope it will be even ______ .

It’s only six o’clock now; Little Tom should be up ,though, because he _____ for nine hours