Topics: Grammar - Present Perfect with for and since
I haven’t worked this hard _________ I was at school.
A. for
B. when
C. since
D. yet
Select your answer:
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Grammar › ViewWhat kind of verb is have? I have a dog.
A. action
B. linking
C. helping/auxiliary
Grammar › View
Russian is a _______ language to learn than English is.
A. difficult
B. more difficult
C. most difficult
D. more and more difficult