[ Grammar ]
I ….about that book until you mentioned it.
A. hadn’t heard
B. hadn’t been hearing

Random Topics:
QuantifierGrammar - Present Perfect TenseIn/On/At + TimeNounsAdverbs by TypePresent/Past/Past ParticplePast Tense vs Future TenseFuture Tense and ConditionalsHas Got & Have GotRun-On SentencesOther quiz:
Modals › ViewYou ___ drink more water every day.
A. Must
B. Should
C. Have to
Gerunds and Infinitives › View
I look forward to__________ with you next week.
A. chatting
B. to chat
C. chat