问题
选择题
Some children were seen _______in the garden all the morning. It must have been _______who picked the flowers.
A.playing; they
B.to play; they
C.playing; them
D.play; them
答案
答案:A
考查非谓语动词与人称代词。句意:一些孩子被看到整个上午都在花园里玩。肯定是他们拔了这些花。现在分词做状语表示句子主语正在进行的伴随性动作。下文人称代词为从句的逻辑主语,故需用主格形式,选A。