Susan decided not to work on the program at home because she didn’t want her parents to know what she ______.
A.has done
B.had done
C.was doing
D.is doing
正确答案是C
Susan decided not to work on the program at home because she didn’t want her parents to know what she ______.
A.has done
B.had done
C.was doing
D.is doing
正确答案是C