[ Grammar ]
____ the problem sum many times to his student, Mr Tay gave out a sigh of frustration.
A. Have explained
B. Having explained
C. Have had explained
D. Have been explaining
Random Topics:
ClausesTenses and Verb FormsGrammar (want to/ need to/ have to)Modal "Have to"ConditionalsImperative SentencesAdjectives and PrepositionsNoun PhrasePassive Voice Active VoiceModal SpeculationOther quiz:
Grammar and Vocabulary › View. My grandmother is 85 years old. She is very _______.
A. young
B. old
C. tall
D. slim
Grammar › View
Tyler: “Ian doesn’t invite girls to his parties.”
Tyler ________ me (that) Ian didn’t invite girls to his parties.
A. said
B. told
English Morphosyntax › ViewAlex leaves the house after the kids ___________ to school.
A. go
B. gone
C. went
D. didn’t go
Homophones › View
The words “course” and “curse” are homophones.
A. True
B. False