[ Tenses ]
Does your friend … about this problem?
A. Understand
B. Understands
C. To understand
D. Understood

Random Topics:
Auxiliary and Modal VerbsPast Simple or Past ContinuousLinking WordsSimilesVerbs + Infinitives / GerundsEnglish MorphosyntaxPassive ModalsSo or SuchTypes of Sentence StructureGrammar - Imperatives and LetOther quiz:
Future Tenses › ViewRecognize the future perfect tense in the sentence: ‘By next week, I will have written my essay.’
A. will wrote
B. have written
C. will have written
D. will write
Tenses › View
The students had already completed the work when the teacher entered the class.
A. Past perfect tense
B. Simple past tense
C. Past continuous tense
D. Present continuous tense