[ Prepositions ]
He will give a lecture … economics.
A. in
B. on
C. at

Random Topics:
Grammar (Possessive Pronouns)Second Type ConditionalWho vs WhomArticle & PrepositionWh-QuestionSuperlative AdjectivesThings in EnglishPresent Simple PassiveTo infinitive - GerundPresent Perfect Simple and ContinuousOther quiz:
The Future Simple Tense › ViewMy sister_______________ (participate) in a race on Sunday morning.
A. is participating
B. have participating
C. participate
D. are participating
Grammar › View
________ more help, I could call my neighbor.
A. Needed
B. Should I need
C. I have needed
D. I should need