A．The back of his French dictionary fell apart when he dropped it.B．He had read the novel without any help.C．He needed to look up some words in order to comprehend the novel.D．His French teacher helped him with the vocabulary.
A．The back of his French dictionary fell apart when he dropped it.
B．He had read the novel without any help.
C．He needed to look up some words in order to comprehend the novel.
D．His French teacher helped him with the vocabulary.