[ Grammar ]
When Jack _______ me, I ________ a letter.
A. was phoning/ wrote
B. phoned/ has been writing
C. phoned/ was writing
D. has phoned/ was writing

Random Topics:
must/shouldReflexive pronouns-ing form and the to-infinitiveAdjectives or AdverbsPast Simple (to be)Personal PronounsGrammar, Conditional Sentences, VocabularyGrammar and Verb TensesPresent ProgressiveDefinite and Zero ArticleOther quiz:
Grammar › ViewShe ______ to school every week.
A. go
B. going
C. is going
D. goes
Grammar › View
Both Lucy and I ……… LC members.
A. Is
B. Am
C. Are
D. Be
Passive Voice › ViewThe fire has destroyed the house.
The house ________________ by the fire.
A. has been destroyed
B. was being destroyed
C. is destroyed
Modals › View
What modal verb would you use to give advice?
A. would
B. might
C. could
D. should
