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:
Tenses › ViewShe ________ to come to my birthday party last Monday.
A. forget
B. forgot
C. forgets
D. is forgetting
Grammar › View
Regular light bulbs use ______ energy.
A. Regular light bulbs use less energy.
B. Regular light bulbs use fewer energy.
C. Regular light bulbs use too much energy.
D. Regular light bulbs use too many energy.
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
