[ Present Perfect Continuous Tense ]
How long … properly in the gym?
- has he been working out
- have he been working out

Random Topics:
Adjectives or AdverbsPrepositional PhraseActive vs. Passive VoiceComparative and Superlative AdjectivesParts of Speech and GrammarAdverb & Compound SentencesProgressive Perfect and Simple Verb TensesTenses - Pasive VoicePassive Voice Present SimpleDependent ClausesOther quiz:
Grammar › ViewChoose the uncountable nouns
A. homework
B. job
C. task
D. project
Modal Verbs › View
How ___ you ___ if you sprain your ankle?
A. will/do
B. can/do
C. should/do
Past Simple Tense › ViewTeresa Teng _____ a Taiwanese singer. She _____ from 1953 to 1995.
A. is … lives
B. was … is living
C. was lived
D. is lived
Conditional Sentence Type 1 › View
If he … the book, I will borrow it in my university library.
- hasn’t
- doesn’t have
