[ Modals of Obligation ]
You… all the exercises but it’s highly recommendable.
A. needn’t have done
B. had better
C. needn’t do
D. ought to do

Random Topics:
Passive with ModalsConditional and SubjunctiveGrammar SuffixesVerb 3 formsModal Verbs and ConjuctionsInfinitive FormsPresent/Future/Past Simple/Present PerfectPast PassivePronoun-Verb AgreementConjunctivesOther quiz:
Conjunction › ViewDon’t worry. I have _____ locked the door.
A. already
B. yet
C. lately
Grammar › View
The bridge’s architect was sued for criminal __________________.
A. Kindliness
B. Honor
C. Negligence
D. Reverence
I __________________to meet them here.
A. Agreed
B. Accepted
C. Inclined
D. Seemed
Grammar › View
You should try to _____ some money.
A. save
B. spend
