问题
选择题
Tom was absent from school this morning, because sometimes he was a little weak and could ______ill .
A．take
B．set
C．catch
D．fall
答案
答案：D
考查动词。 A. 带走 B. 树立 C.抓住 D.变成，落下。句意：汤姆今天上午没来上学，因为有时他很虚弱，并且可能生病了。Fall ill 生病，故选D。