[ Grammar ]
Is the underlined word had been placed correctly?
I heard a knock at the door but there was anyone there.
A. No
B. Yes

Random Topics:
Present, Past, and Future TimeNoun and PronounTenses and OpinionsRelative Clauses with who and whichPresent Simple and Present Continuous TenseGrammar - Present Perfect with already, just, yetFuture TenseDirect Object and Indirect ObjectBecause of & Inspite ofFuture Simple TenseOther quiz:
Grammar › ViewNhan is very short. He can’t play basketball.
A. Nhan is too short to play basketball.
B. Nhan is too short that he can’t play basketball.
C. Nhan is enough short to play basketball.
Tenses › View
Last night, we ______ (have) dinner at a fancy restaurant.
A. have
B. are having
C. had
D. will have
Inversions and Subjunctive › ViewSubjunctive: It is important that Sarah (should) attend this meeting.
A. correct
B. incorrect
Prepositions › View
Elders usually wake up ___ 5 o’clock in the morning.
A. in
B. on
C. at
