They’re little sheep that Ilook after them carefully all day.A. too shouldB. such have t

问题补充：

They’re little sheep that Ilook after them carefully all day.

A. too, should

B. such, have to

C. so, must

D. such, ought

答案：

A. too, should

(答案→)B. such, have to

C. so, must

D. such, ought

解析：too副词，太；such形容词，如此的；so副词，如此，这样；should应该；have to必须，不得不；must必须，一定；ought应该，应当。句意：他们是如此小的绵羊，以至于我不得不整天细心地照顾他们。结合语境可知选B。