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