[ Grammar ]
Breathing is a mechanical process ____ fills the lungs with air.
A. when
B. where
C. which
D. whose
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Articles and NounsComparative AdverbsGrammar and VocabularyRelative PronounPossessive NounsModals and ResponsibilitiesPassive Voice, Question Tag, PrepositionsPersonal PronounsModals for DeductionConjunctions & InterjectionsOther quiz:
Verb Tenses › View. Select the grammatically correct past perfect sentence:
A. I had finished when he arrived
B. I finished when he arrived
C. I am finishing when he arrives
D. I have finished when he arrives
Past Perfect Simple & Continuous › View
We ___ our passports, so we went home to get them. (Past Perfect Simple)
A. had been forgotten
B. had forgotten
C. been forgot
Reported Speech and Reported Questions › ViewMy boss says: “I can speak English”
A. He said he could speak English
B. He said she can speak English
C. He said he could English
Grammar › View
If you are not in the car by the time I start ________ the engine, I will leave without you.
A. at
B. in
C. up
D. on