[ Verb-ing and Infinitive ]
They don’t know …………….. .
A. cook
B. how to cook
C. cooking
D. to cook

Random Topics:
-ed or -ingPresent and Future TensesPronunciation and VocabularyAntonymsDeterminersAdverbial ClauseShould and Shouldn'tVocabulary and GrammarPresent PerfectThe Future Simple TenseOther quiz:
Preposition of Time › ViewYasmin’s birthday is ___ 31st December.
A. on
B. in
C. at
Present Tenses › View
How do you form a negative sentence in the present continuous tense?
A. Subject + is/am/are + not + verb-ing.
B. Subject + is/am/are + verb-ing + not.
C. Subject + do/does + not + verb.
D. Subject + was/were + not + verb-ing.
Lend vs. Borrow › ViewI have to go to my sister’s house to ________ her earrings for the party.
A. Borrow
B. Lend
Passive Voice › View
They landed on the moon.
A. Active Voice
B. Passive Voice
