Question

Jack loves sports. He is often seen __________ basketball on the school playground.

A.play
B.playing
C.plays
D.toplay

Answer 1

【答案】：B
see的用法为see sb．do或者是see sb．doing，该句是被动语态，意思为“他经常被看见在学校操场打篮球”。这里强调的是这一刻人们看见他正在打篮球的这一幕，故选B。