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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Perfect Modals › ViewWhich perfect modal indicates a logical conclusion about a past event?
A. May have
B. Could have
C. Should have
D. Must have
Grammar › View
If you beleive in yourself, anything become possible for you.
A. If you beleive in yourself, anything becomes possible for you.
B. If you believe in yourself, anything become possible for you.
C. If you believe in yourself, anything becomes possible for you.
What is the use of the future going to? / cual es el uso del future going to
A. Hablar de una situación del pasado
B. Expresar una intención para hacer una actividad en el futuro
C. Dar un consejo
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.