[ Grammar ]
I ______ what the problem is by tomorrow.
A) will be discovering
B) have discovered
C) will have discovered
D) will be discovered

Random Topics:
IN, ON & ATPast Perfect vs Past SimpleTenses and ArticleCompound Words and SentencesMain Idea and Sentence StructureSimple Compound and Complex SentencesConjunctions and TransitionsConjunctive AdverbsPast simple vs Present perfectPassive Voice in Past and Present TenseOther quiz:
Present Continuous › ViewEdson and Dakson ___________ (not buy) a new laptop this weekend.
A. buy
B. don’t buy
C. isn’t buying
D. aren’t buying
Phrasal Verbs › View
Are you sure you aren’t holding your stomach ______, Charles? Your waist was two inches more than this the last time I measured it.
A. away
B. for
C. in
D. off
Grammar & Vocabulary › ViewI have known Chris _______ we started school together.
A. since
B. for
Vocabulary › View
relating to the country or country life
A. duration
B. rural
C. exclude
D. analyze
