Choose the right answer, remember the rules of have to/don’t have to. Выбери правильный вариант ответа, вспомни правила использования have to/don’t have to.

…... we have to stay here?
Are b) Do c) Have
People in the past …... to live without cars and computers.
had b) has c)have
It doesn’t …... be so difficult.
need b) have to c) has to
We …... have to go there if you don’t want to.
mustn’t b) haven’t c) don’t
Tom and Geoff …... to help their parents when they were ill.
have b) had c) were
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