When my cat is hungry, he _______ the cage door _______ his paw.
A.knocks on, in | B.knocks at, with |
C.knocks on, by | D.knocks at, uses |
When my cat is hungry, he _______ the cage door _______ his paw.
A.knocks on, in | B.knocks at, with |
C.knocks on, by | D.knocks at, uses |