[ Grammar ]
We must find ________ solution to _______________ problem.
A.-,a
B. a, the
C. an, the
D. the,a

Random Topics:
Past ParticipleConditional and Mix Conditional Sentence1st & 2nd ConditionalsArgumentative VocabularyRelative ClausePast Progressive TensePresent Tense (Negatives and Questions)ExclamationIrregular verbsModal and Auxiliary VerbsOther quiz:
Coordinating Conjunction › ViewI am a vegetarian, … I don’t eat any meat.
A. and
B. nor
C. yet
D. so
Passive Voice, Modals of Deduction and First Conditional › View
. That ______ be true! I saw him yesterday.
A. must
B. might
C. can’t
D. should
Present Continuous Tense › ViewHe ……………………sitting on the table.
A. Am
B. Be
C. Are
D. Is
Vocabulary › View
you are getting it ready for the next step
A. storage
B. transplanted
C. blooming
D. prepping
