Question

Complete these sentences using MUST/MUSTN’T or HAVE TO/ DON’T HAVE TO

1) We........ take care of the environment.

2)We ...... reduce, reuse and recycle

3)You...... waste water

4) you....... buy products with little packaging.

Answer 1

Resposta:

1) We "have to" take care of the environment.

2)We "must" reduce, reuse and recycle

3)You "don't have to" waste water

4) you "musn't" buy products with little packaging.

Explicação:

Não sei se é exatamente o motivo mas meu raciocínio foi:

1 - o verbo "take" está no infinitivo, então ele precisa do "to"

2 - como é algo que devemos fazer sobrou o "must"

3 - mesmo motivo do 1

Answer 2

A- must
B- mustn’t
C- have to
D- don’t have to

1- c
2-a
3-d
4-b