Differentiate between a modal and auxiliary verb.
A. Modal verbs are always followed by a main verb, while auxiliary verbs can stand alone.
B. Modal verbs are used for forming questions, while auxiliary verbs are used for making statements.
C. Modal verbs express necessity, possibility, or permission, while auxiliary verbs are used to form tenses and voice.
D. Modal verbs express past actions, while auxiliary verbs express future actions.

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Present Tense (Negatives and Questions)Grammar & VocabularyCan vs CouldModal AuxiliariesWould rather/ would prefer/ would likeModal Verb, Passive VoiceWould/would like - affirmative/negativeGerundFinite and Non-Finite VerbBecause / soOther quiz:
Modals of Necessity and Suggestion › ViewA: I’m planning to go to Bogota next year. When do you think I __________ go?
B: You __________ go anytime. The weather is nice almost all year.
A. ought to / can
B. can / should
C. need to / can
D. should / ought to
Mixed General Quiz › View
London is ___ capital city.
a. a
b. the
The glasses cost ten baht ……. .
A. one
B. each
C. every
D. all
Conjunction › View
I know the answer __________ I can’t tell you.
A. unless
B. after
C. but
D. although
