[ Grammar ]
He couldn’t concentrate ………………. his work, so he went for a walk.
A. on
B. in
C. about
D. at

Random Topics:
Phrasal verbs and Prepositional PhrasesPresent Tense vs Past TenseWh-QuestionPassive SentencesModal Verbs and Contrastive ConjunctionsTenses (Present, Past, Future Forms)Language Features: Reflective ArticleWould/would like - affirmative/negativeTOEIC Grammar and Vocabulary ReviewVerbs and Possessive AdjectiveOther quiz:
Simple Present Tense › ViewHe _________ a book before he goes to bed.
A. read
B. reads
Grammar › View
Janelle was ____ glad to hear from them.
A. real
B. really