She thought _______impossible to finish so much work in a day.
A.this
B.that
C.its
D.it
答案:D
学校新买了3箱排球,每箱装12个,每个排球的价格是42元.一共花了多少元?
1, 9, 18, 29, 43, 61, ( )
A.82
B.83
C.84
D.85