[ Grammar ]
An air-conditioning system _______ a refrigerated gas like Freon to cool the air
A. Using
B. Use
C. Uses
D. Used
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Wish SentenceTo Infinitive/Bare Infinitive/GerundsTenses & PassiveBasic Grammar-ed and -ing AdjectivesPast Tense & Present Perfect TenseVerb and PrepositionAdjective SuffixesHave to / Do not have toPast Simple and Past ProgressiveOther quiz:
Grammar › ViewHe ………. to drink 1 glass of milk everyday
A. need
B. needs
C. to need
Grammar › View
Choose the sentences that are closest in meaning to the given sentence(s).
Before we came to Lam’s party, we had bought some flowers.
A. Having came to Lam’s party, we bought some flowers.
B. Having bought some flowers, we came to Lam’s party.
C. After we came to Lam’s party, we bought some flowers.
Type of Sentences › ViewDon’t slam the door!
A. Imperative
B. Interrogative
C. Declarative
D. Exclamatory
Understanding Product Packaging and Tenses › View
What is the main purpose of a procedure text?
A. To explain a process
B. To persuade
C. To inform
D. To entertain