[ Grammar ]
Which perfect tense is being used?
We will have walked for 2 hours by the time we get back to camp.
A. past perfect
B. present perfect
C. future perfect

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Passive Voice › ViewKaraoke songs _____________ at parties nowadays. (sing)
A. are sung
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C. are sing
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Grammar › View
Select the correct word to fill in the blank.
Nobody _____ allowed to enter the library if the librarian isn’t there.
A. are
B. is
Grammar › ViewChoose the correct tense for this sentence:
I am working in a call center
___
A. Present simple
B. Present continuous
C. Present perfect
D. Present perfect continuous
Vocabulary and Grammar › View
The astronaut approached the tiny creature _ because they did not know if it was dangerous or friendly.
A. boldly
B. quickly
C. cautiously
D. courageously
