[ Continuous Tense ]
What is the correct sentence for that picture?
A. When the bell was ringing, they did an exercise
B. They doing an exercise and the bell rang
C. While the bell rang, they doing an exercise.
D. They were doing an exercise when the bell rang.

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Grammar - Future ActionSecond Type ConditionalGrammar - used toShould, Should not haveLinking Words and Conjunctionwould should couldHomophone & HomonymPhrasal Verb Put & GoAuxiliary WordsTo Infinitive or Bare InfinitiveOther quiz:
Past Tenses › ViewCombine past continuous and past simple in a sentence.
A. I was watching TV when she called.
B. While watching TV, she called.
C. She was calling while I watched TV.
D. I watched TV when she called.
Phrases and Clauses › View
Is the underlined clause DEPENDENT or INDEPENDENT?
After my friend ate the sandwich, she felt really sick.
A. DEPENDENT
B. INDEPENDENT