[ Vocabulary ]
I was tired and couldn’t ____ on doing my research project properly.
A. concentrate
B. look
C. pay attention
D. Both A and C
Random Topics:
Past Continues TenseAdverb ClausesConditionals / Unreal PastFuture or PastGrammar-Present Continuous-Sentence MakingPresent and Past TensesGiving and Asking for AbilitySentence Structure and Verb TensesGerunds and InfinitivesRelative ClausesOther quiz:
Vocabulary and Grammar › ViewChoose the correct word for the blank: “Exams are one way to ___ knowledge among students.”
A. share
B. grow
C. encourage
D. spread
A(n), the, no article › View
Yesterday I bought ___ book and some flowers for Ms. Linh, but I lost ___ book on my way home.
A. a / the
B. – / the
C. the / a