Grammar Quiz

[ Vocabulary ]

___________ is an investigation in which all of the conditions are controlled.

A. control

B. experiment

C. scientific method

D. variable

Select your answer:
         


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Past and Past ContinuousRegular and Irregular AdverbPreposition (at,in,on)Countable - UncountableClauseDegrees of ComparisonConditionalMixed TensesPrepositions of Time

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Be careful! You_______ into that hole in the ground.

A. will be walking

B. are going to walk


Grammar › View

I have been waiting for the prices of the houses to come down before buying one, but I think I —- too long and the prices —- to go up again.
A. have waited / began
B. wait / began
C. am waiting / are beginning


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