[ Grammar ]
_________then what I know today, I would have saved myself a lot of time and trouble over the years.
A. had I known
B. did I know
C. If I know
D. If I would know

Random Topics:
The Future Simple TenseDemonstrative Pronouns and Verb TensesFuture Tenses, Conditionals and ProfessionsSubjective and Objective PronounAdverbial Clauses of Reason / CausePreposition (at,in,on)Quantifiers, Countable and Uncountable NounsGerundComparatives and ConjunctionsPresent/Past/Future Continuous TenseOther quiz:
Question Words › View_________ do you brush your teeth?
– Two or three times a day.
A. How many
B. Where
C. How often
Grammar › View
Richard is ……… his new glasses today.
A. wore
B. wear
C. wears
D. wearing
Modal Verbs › ViewHe ______ his son, they look completely different.
a. might be
b. can’t be
c. must not be
Grammar › View
If we had known, ….
A. we would have congratulated him
B. we would congratulate him
C. we will congratulate him
D. we will be congratulating him
E. we congratulate him
