A ___ is an unobstructed sound passing through the mouth and nasal passages.
This, That, These, ThoseVerbConditional Sentence Type 2 There is or There areActive and PassivePast Simple Tense
Other quiz: Grammar
Katherine was lying on the sofa. She was tired because she ………….. hard.
A. had been working
B. had worked
C. was working
How to use : Read the question carefully, then select one of the answers button.