fail to keep up with A. fall into ...

[ Phrasal Verb ]

fail to keep up with

A. fall into

B. Fall in

C. fall behind

D. Fall on

Select your answer:

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Grammar › View

The frog jumped suddenly.

What is suddenly?

A. pronoun

B. noun

C. adverb

D. adjective

Used to › View

My brother and I ______ fight a lot when we were little

A. used to fought

B. used to be fighting

C. used to fight