[ Tenses and Structure ]
Which sentence correctly combines tenses?
A. I eat when the doorbell is ringing.
B. I was eating when the doorbell rang.
C. I was eat when the doorbell rings.
D. I have eaten when the doorbell rang.

Random Topics:
Conditional 0Participle - ing/ edSimple Present and Present ContinuousConjunctions & PrepositionsArticles & QuantifiersPrepositions and ConjunctionsVocabulary and ModalsComparatives and SuperlativesTenses and ComparisonsPresent Perfect - Just, Already, YetOther quiz:
Grammar › ViewDon’t forget __________________ my letters, please.
A. to post
B. posted
C. posting
D. post
Sentence and Fragment › View
The dog belonging to the old lady on the corner of the street barks constantly.
A. Complete Sentence
B. Fragment
Verb, Past Tense: Choose the past tense verb:
A. laugh
B. laughs
C. laughing
D. laughed
Conjunctions and Commas › View
___________ Samantha is tired, she continues to work.
A. Because
B. So
C. Although
D. If
