Question

Linda didn’t go to school yesterday because she had to        her sick mother at home.

1. A.
   look at
2. B.
   look for
3. C.
   look after
4. D.
   look up

Answer 1

C
C 考查短语辨析。look at“看，看一看”；  look for“寻找”；look after“照顾”；look up“查找（生字）”。根据句意，选C。