[ Grammar ]
“Our Internet connection was down yesterday. ” ” I’m sure that was frustrating.”
A. It could be frustrating.
B. It must be frustrating.
C. It can be frustrating.
D. It must’ve been frustrating.

Random Topics:
GerundsVerb PhrasesIN, ON & ATVerb TensesPhrases and TensesGrammar: MorphologyPrepositions & Prepositional PhrasesTenses, Determiners & Subject Verb AgreementComparatives and Past Perfect TenseWish - beginnerOther quiz:
Adverb of Time › ViewPut in the correct word.
Mark is a singer and he sings___.
A. beautiful
B. beautifully
Grammar › View
We use the present continuous for:
A. Daily routines, habits, repeated actions.
B. Actions happening at the time of speaking.
C. Permanent states.
Vocabulary › Viewa hypothesis regarding the solution to a crime
A. motive
B. theory
C. alibi
D. deduce
Grammar › View
She _______ some novels.
A. have written
B. have writing
C. have wrote
D. has written
