[ Present Perfect Negative and Interrogative ]
Affirmative. We ____________ (have) (open) the door to new knowledge.
A. had open
B. have opened

Random Topics:
WishesPronouns ( Interrogative )Conditional Sentence Type 2Future Tenses and ModalsDefinite, Indefinite and Zero ArticlesHas Got & Have GotAdverbs, Infinitives, Definite ArticleHelping and Linking VerbsNoun, Quantifiers and SuffixesAdverb PhrasesOther quiz:
Grammar › ViewWhich of the following words is a proper noun?
A. Our
B. team
C. Japan
D. pitcher
Grammar › View
She ___________ English in school when she was a child.
A. learn
B. learned
C. learns
D. learning
Tag Question › ViewEveryone can hear my speech clearly, ____?
A. can’t they
B. could they
C. do they
D. can’t he/she
Conditional Sentence 0, 1 › View
If you cook vegetables for long time, they … their nutrients.
A. loses
B. losing
C. would lose
D. will lose
