[ Modal Verbs ]
“You ___ wear a helmet when riding a bike.”
A. can
B. should
C. may
D. could

Random Topics:
Time PhrasesParticiple AdjectivesZero and First ConditionalsIrregular verbsCoordinating Conjunctions and Comparative AdjectivesPhrasal Verbs with up and down1st & 2nd ConditionalsTransitional WordsVerb TenseVerbal TensesOther quiz:
Grammar › ViewThe children … in the garden now.
A. play
B. are playing
C. is playing
D. played
Grammar › View
This form is in Chinese. I can’t fill _____.
A. it in
B. in it
C. it
Articles › ViewThey say she has ______ IQ of 160.
A. –
B. a
C. an
D. the
Vocabulary and Grammar › View
He is working as a/an ______ in his uncle’s workshop.
A. tradition
B. artisan
C. embroider
D. crafsmen