[ Grammar ]
The thing ____________ really makes me worry is that we haven’t prepared for every possible danger.
A. who
B. whom
C. which
D. whose

Random Topics:
Modal Verbs and PermissionBare Infinitive and To InfinitiveFirst Conditional & Future TensesSuperlative AdjectivesWish SentenceNoun Phrases and Verb PhrasesPassive of Modal VerbsSo or SuchSimple Present and Past TensePreference & Future TenseOther quiz:
Do vs. Does › View_________ Karen speak Portuguese?
A. Do
B. Does
Relative Pronouns › View
I met the woman _____ son got married last Sunday.
A. who
B. whose
C. which
D. when
E. where
Grammar › ViewKeep ——- books on the table.
( Choose the correct pronoun from the given words and fill in the blanks )
A. yours
B. your
C. hers
D. theirs
Modals in The Past › View
I called his apartment and nobody answered. He ___ gone out.
A. must have
B. could have
C. can’t have
D. might have