[ Perfect Modals ]
They ________ been more careful with their decision.
A. must have
B. could have
C. should have
D. would have

Random Topics:
Conjunctions - Conjunctive AdverbsPast PerfectModal Verb-Ing and Infinitive Verb PatternsCardiology ServicesPassive SentencesSimple Present VS Present ContinuousPresent Continuos TensePassive VoiceTenses and ComparisonsOther quiz:
Grammar › ViewThe PAST perfect is formed by…
A. HAVE + PAST PARTICIPLE
B. HAD + PAST PARTICIPLE
C. AM/ IS/ ARE + PAST PARTICIPLE
D. AM / IS / ARE + V-ING
Grammar › View
Molly is good at … the electric guitar.
A. play
B. to play
C. playing
Adverb Clauses › ViewWhich subordinating conjunction is used to introduce an adverb clause of contrast?
A. since
B. while
C. because
D. unless
Phrasal Verbs › View
I hope help comes soon, Julie. I don’t think we can ______ much longer.
A. hold back
B. hold over
C. hold in
D. hold out
