Here's the exercise 'Phrasal idioms with the verb 'knock' | B2 – Upper-Intermediate' about B2 – Upper-Intermediate. It's practise the B2 – Upper-Intermediate.
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B2 – Upper-Intermediate, English grammar in here.
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Test content
A. knock on
B. knock off
C. knock up
D. knock out
A. knocked on
B. knocked in
C. knocked off
D. knocked up
A. knock out
B. knock up
C. knock on
D. knock off
A. knock off
B. knock on
C. knock out
D. knock up
A. knock-off
B. knock-on
C. knock-over
D. knock-up
A. knock off
B. knock out
C. knock up
D. knock on
A. knock out
B. knock up
C. knock off
D. knock on
A. knock off
B. knock out
C. knock on
D. knock up
A. knock on
B. knock out
C. knock up
D. knock off
A. knock out
B. knock off
C. knock up
D. knock on