[ 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

Random Topics:
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:
Prepositions of Time and Place › ViewHang your poster ……the wall.
A. on
B. in
C. at
Grammar › View
Stella ______________ with her friends just now.
A. is walking
B. are walking
C. was walking
D. were walking
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
