[ Grammar ]
Inversion: _______ but also it filters out harmful rays.
A. Not only does the environment give us air to breathe
B. The environment which gives us air to breathe
C. The environment gives us air to breathe
D. Not only the environment gives us air to breathe

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Comparative and SuperlativesPassive Modals in Different TensesVerbal PhrasesGerunds as Objects of PrepositionsVerb Forms and PrepositionsPast PassiveGerund and To InfinitivePast ParticiplesPast Tense vs Present TenseInfinitive GerundOther quiz:
Grammar Rules › ViewChoose
We use the modal verb “don’t have to” to express…
A. obligation and necessity
B. strong recommendation
C. lack of necessity or obligation
D. prohibition
E. advice or an opinion
Grammar › View
Bella usually _____________ her homework carefully.
A. do
B. does
C. did
D. doing