Question

Seeing their teacher _______ into the classroom, they stopped _______ at once.

A．walk; telling	B．entering; to speak
C．enter; to tell	D．walking; talking

Answer 1

D

句意：看見他們的老師走進(jìn)教室，他們立即停了下來。現(xiàn)在分詞作賓語補(bǔ)足語表示正在進(jìn)行的伴隨性動(dòng)作，和被修飾詞是主謂關(guān)系。Stop后接動(dòng)名詞表示停止正在做的動(dòng)作，接不定式表示停下來去做另一件事情，結(jié)合語境可知選D。