[ Grammar ]
We never know what might have happened, … the email earlier
A. If he sent
B. If he has sent
C. Had he sent
D. did he send

Random Topics:
Present Simple & Present Continuous TensesArticles with Proper NounsAuxiliary VerbsSpeech TensesCommon & Proper NounsIndependent ClausesPast PassiveActive vs. Passive VoiceExpressing Obligation and ModalsWill or Going toOther quiz:
Grammar › ViewLet’s __ the travel agent about flights to Europe.
A. ask
B. asking
C. asked
Grammar › View
The author’s latest novel is a _____ blend of historical facts and fiction, creating a unique narrative.
A. fortuitous
B. harmonious
C. disjointed
D. jarring
Phrasal Verb › ViewXin Theng ___ four new dresses in the boutique.
A. try on
B. tryon
C. try in
D. tryin
Grammar and Vocabulary › View
If you don’t eat _________ healthy food, your immune system could become weaker.
A. enough
B. always
C. often
D. regularly