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

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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 › ViewSentence, run-on or fragment:
After the principal gave me the award, my mom took out picture.
A. sentence
B. fragment
C. run-on
Modal Verbs › View
A : _____ I turn the radio on?
B : Certainly.
A. Might
B. Must
C. May
D. Need
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