Tell me directly. Don’t just ___ to some problem.
GeographyGeneral KnowledgeTransition Words And Phrase
Next quiz: Grammar
I ______ (study) non-stop ______ 9:15.
A. I have studied non-stop since 9:15.
B. I have studied non-stop for 9:15.
C. I has study non-stop since 9:15.
D. I has study non-stop for 9:15.
How to use : Read the question carefully, then select one of the answers button.
Tips : If this page always shows the same questions, make sure you correct the question first by pressing the "check answer" button.