[ Prepositions ]
I think you’d better concentrate ____________ your work if you want to finish on time.
A. at
B. on
C. of
D. for
Random Topics:
Active & Passive VoiceVerbs & AdverbsAlthough, Though, In spite of, DespiteVerbs and AdverbsVocabulary and PrepositionsGerund and InfinitiveAdjective or AdverbKinds of NounsGrammar & ReadingModals and Past ModalsOther quiz:
Tenses › ViewWhich sentence is not past perfect continuous tense ?
A. He had been waiting since daybreak.
B. If she had gone there yesterday, she would have seen you.
C. It had been raining all night.
D. My father had been working hard all day.
Present Simple › View
Mike and Joe __________ at school now.
A. is
B. they
C. are