[ Prepositions ]
I think you’d better concentrate ____________ your work if you want to finish on time.
A. at
B. on
C. of
D. for
Select your answer:
Random Topics:
Time ConjunctionsComparison Degree & GerundsWish - beginnerParts of Speech and Compound SentencesPresent Simple and ContinuousModal Verbs in ConditionalsGerunds in SentencesVerb-ing and InfinitiveThere is, There are, Some, AnyPresent/Future/Past Simple/Present PerfectOther quiz:
Present Perfect Simple and Continuous › ViewI ___________ skydiving. I would like to try it one day though.
A. have never been
B. have been
C. haven’t been skydiving
Past Simple › View
We ______ our grandparents last summer.
A. didn’t visit
B. don’t visit
C. wasn’t visit