[ Grammar ]
invention of wheel was helpful in ………..
A. Obtain warmth
B. Obtain the necessary things
C. To carry heavy objects
D. All of the above

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Past Tense & Present Perfect TensePhrases and TensesPresent Simple Tense Passive-ed/-ing AdjectivesConjunction and PunctuationComperative and SuperlativePrepotitionsReflexive pronounsFor vs SinceAdjectives & PrepositionsOther quiz:
Grammar › ViewWhat…..since you arrived?
A. Are you doing
B. Will you do
C. Did you do
D. Have you been doing
Grammar › View
Remember ______ the letter.
A. to post
B. posting