[ Prepositions ]
The boy needs to concentrate _____ his studies. His grades are falling.
A. In
B. On
C. About
D. Over

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Past Tense vs Future TensePrepositions and TensesPossessive PronounsSubjunctiveComparative and Superlative AdjectiveEmployment VocabularyComparatives - SuperlativesFamily VocabularyTenses: Present simple, Past Simple, Future SimpleLinking Words and ConjunctionOther quiz:
Present Tenses › ViewI can imagine __________ a year abroad.
A. to spend
B. spending
Grammar & Vocabulary › View
I worked hard last term, but my exam results were _______ so I was so _______.
A. disappointed/ excited
B. disappointing/ exciting
C. disappointed/ embarrassed
D. disappointing/ embarrassed
Grammar › ViewIt’s the ………………….. building in the town.
A. oldest
B. older
C. olderest
D. olldest
Modal Auxiliaries and Similar Expressions › View
Which sentence is correct?
A. You must to install the latest update.
B. You must install the latest update.
C. You musts install the latest update.
D. You must installing the latest update.
