The phrase a leg up in Paragraph 2 probably means ______.A.an instinctB.an advantageC.a

In "You will make yourself tired, keeping on your legs. " the -ing participle phrase is us

What does the phrase "caught up" in Paragraph 5 mean？A．Come from behind and reach someone

What does the phrase "hook up...with" mean in Paragraph 6？A．To meet someone and become fri

What does the phrase "catch up"in Paragraph 5 mean？A．To come from behind and reach someone

The phrase "in borderline cases" in Paragraph Six means thatA．when patients can"t make up

The phrase "warm up to " in the third paragraph can be most likely replaced by______.A．bec