To “catch on” means ___.
a. to understand
b. to be punished
c. to grab something

Random Topics:
Gerund or InfinitiveVerb to haveConditionals III - Mixed 1st, 2nd & 3rd Conditionalslike/do not likePast Simple and ContinuousConjunctive AdverbsHave to/Has toJobsCorrelative Conjunction & Complex SentencesInfinitivesOther quiz:
Grammar › ViewVocabulary
Some people say that ________ are just friends you haven’t met yet.
_
A. peers
B. strangers
C. coaches
D. colleagues
Past Modals › View
I ___________________________________ (arrive) on time, even if I’d left earlier. There were dreadful traffic jams all the way. (past negative possibility)
A. couln´t have arrived
B. could have arrived
C. wouldn´t have arrived
D. would have arrived
IELTS Vocabulary › Viewto use any information that you have to guess how much something will cost
A. estimate the cost
B. produce profitably
C. infrastructure
D. elease into the atmosphere
Future Tenses › View
My neighbour (celebrate) his birthday party on Friday evening. I am invited.
A. will celebrate
B. is going to celebrate
C. is celebrating
D. celebrates