[ Grammar ]
The problem ______.
A. has been solved
B. have being solved
C. was solve
D. has being solved

Random Topics:
Present simple or Past simpleModal Verbs and Contrastive ConjunctionsModals and PhrasesSimple Past Tense & Future TensePast Tense vs Present Perfect TensePresent Simple & Present Progressive TenseThe Structural Types of SentencesTransportation VocabularyConditional Sentences Type I, IISubject/Verb Agreement with Collective NounsOther quiz:
Past Continuous vs Past Simple › ViewBecause she ________ Chinese class yesterday afternoon, she couldn’t go to Sarah’s birthday party.
A. had
B. was having
C. were having
Grammar › View
Which is the subject in the following sentence.
Peter invited us to a party.
___
A. Peter
B. us
C. party
Relative Clauses › ViewDo you know the student
A. which won the competition?
B. who won the competition?
C. whose competition won?
D. whom competition won?
Sentence Structure and Grammar Rules › View
Complete the sentence: I don’t like ice cream, and ___ does my brother.
A. nor
B. so
C. neither
D. but
