[ Grammar ]
A : I’m very worried.
B : Look, if she __________ by 9 o’clock, I’ll go out and look for her.
A. isn’t calling
B. hasn’t called
C. didn’t call

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Present, Past, and Future Time › ViewWhat is the use of the future going to? / cual es el uso del future going to
A. Hablar de una situación del pasado
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Grammar › View
What is the cause in the following sentence?
Sally didn’t study. She had an F on the test.
A. Sally didn’t study.
B. She had an F on the test.