[ Simple Past Tense and Present Continuous Tense ]
Please be quiet. I …… trying to concentrate.
A. am
B. is
C. was
D. were

Random Topics:
Grammar - SimilesPronounAuxiliary Verbs (be, do, have)Present Perfect - Just, Already, YetWishes & Reported SpeechPast and Present TensesAdjectives with -ED and -INGComparative and Superlative AdjectivesFood VocabularyInfinitive GerundOther quiz:
Grammar › ViewA Where _____ you born?
B In Liverpool.
_
A. were
B. was
C. did
Tenses › View
When I last saw him, he _____ in London.
A. lived
B. was living
C. has lived
D. is living