[ Grammar ]
Phong, Vy and Duy (ride)…. their bicycles to school now
A. aren’t riding
B. don’t riding
C. haven’t riding
D. hasn’t riding

Random Topics:
Comparative and SuperlativesVerb FormsLet & Be allowed toSuffixes and TensesCan vs CouldSpeech TensesPast Tense vs Present Perfect TenseReported Speech and Reported QuestionsModals TensesSubordinating Conjunctions and ClausesOther quiz:
Grammar › ViewThe streets are really …………… in this neighborhood. Cars park on both sides and only one car can pass.
A. modern
B. narrow
Grammar › View
Infinitive: Heavens! It felt so good to eat!
A. Heavens
B. so good
C. to eat
Infinitives › ViewWhat is the infinitive phrase in the following sentence?
In the mall, we want to walk quickly to the food court.
_
A. to walk
B. to the food court
C. In the mall
D. to walk quickly to the food court
Vocabulary and Grammar › View
A great way to improve ______ skills is to keep trying new things.
A. reason
B. reasoning
C. reasons
D. reasoned
