[ Preposition ]
They are worried ___ the future.
A. of
B. on
C. at
D. about
Select your answer:
Random Topics:
Gerunds & Infinitives + VocabularyPast and Present TensesWill, Be going to, Present ContinuousPast Tense & Present Perfect TensePossessive AdjectivesEssential and Nonessential ClausesGrammar - Nouns, Verbs, and AdjectivesModal Auxiliary VerbsPossessive PronounsOther quiz:
Grammar › ViewThe doctor said that Ken _______ stop eating junk food if he wants to keep fit.
A. has to
B. have to
C. doesn’t have to
D. can’t
Vocabulary and Grammar › View
We must not __________ the river by dumping dirty dishwater into it.
A. polluted
B. pollute
C. pollutes
D. polluting