Dogs are ________ difficult ________ take care of.

1. A.
   so; that
2. B.
   very; to
3. C.
   to; too
4. D.
   too; to

---A：Are dogs ________ difficult ________ take care of?

---B：I think so.

1. A.
   so, that
2. B.
   too, that
3. C.
   so, to
4. D.
   too, to

Dogs are ______ difficult ______ take care of.

A. so; that

B. very; to

C. to; too

D. too; to

Dogs are ________ difficult ________ take care of.

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Dogs are ________ difficult________ take care of.

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