[ Grammar ]
While he … a sandwich, somebody knocked at the doors.
A. ate
B. was eating
C. is eating

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Grammar - either...or, neither...norSimple Present Tense vs Present Continuous TensePast Simple or Past ContinuousSpeculation with Modal VerbsAlthough / DespiteModals and Modal PerfectsPast Perfect Simple TenseSimple Present vs Present ProgresiveArticles with Proper NounsParticiple AdjectivesOther quiz:
Simple Present Negative and Question › View………….. Robert’s parents like his new car?
A. Do
B. Does
Tenses › View
They _____ us only one letter since they _____ married.
A. wrote / have been
B. have written / were
C. wrote / were
D. had written / have been
E. have written / had been
Coordinate Conjunction › ViewWhat is the complete predicate of this sentence?
Ms. Bosh visited classrooms and gave advice.
A. Ms. Bosch
B. visited classrooms
C. gave advice
D. visited classrooms and gave advice
Modals Verbs › View
I______ help you if you want.
A. Could
B. Ought to
C. Would
D. Can