4. The government threatened to _____ the already huge US trade deficit. A. add to

B. add up to

C. amount to

D. get to

答案:A

add to 增添

add up to 合計(jì)達(dá),總括起來,意味著

amount to 合計(jì),共計(jì);(在意義、價(jià)值等方面)等同,接近

get to 到達(dá), 接觸到, 開始, 對(duì)……有影響