[ Adverb & Compound Sentences ]
__________ the teacher explained the concept well, the students understood it, __________ they could apply it effectively.
A. Once, and
B. Since, and
C. When, but
D. If, or

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Present Perfect Tense and Simple Past TensePresent Continuous for FutureWish SentenceVerbs & AdverbsBecause / soSimple PresentPhrases and ClausesTravel VocabularyPresent Perfect Simple vs ContinuousGrammar - FragmentsOther quiz:
Simple Present and Simple Past › ViewHe ————– up early every morning.
A. wake
B. waked
C. woke
D. wakes
Grammar › View
If he more free time, he would take his children to the zoo.
A. has
B. is having
C. had had
D. had