[ Grammar ]
Which sentence is correct ?
A. Mumps are a very common disease which usually affects children.
B. Mumps is a very common disease which usually affects children.
C. Mumps was a very common disease which usually affects children.
D. Mumps were a very common disease which usually affects children.

Random Topics:
Grammar : can, could and be able toTensesAdverb or AdjectiveModals and Comparative SuperlativeAdverbial Clause / If / ComparativesPresent Continuous, Present Perfect and Used toWh- Questions Present Simple TenseIndefinite and Definite ArticlesCountable and UncountableNeither/Either/All/NoneOther quiz:
Conditional Sentences › ViewHe would have been late if he ___ (not catch) the early bus.
A. not catching
B. did not catch
C. has not caught
D. had not caught
Conjunctions › View
______ we arrived at the cinema, the movie had already started.
A. when
B. while
C. after
D. because
Idioms › ViewWho takes the cake?
A. The one who burns out.
B. The one who simmers down.
C. The one who has crust.
D. The one who is out to lunch.
Mixed General Quiz › View
A jet regularly ___ at an altitude of 20,000 feet.
a. flies
b. fries
