单句改错。 1. This is (A) his (B) the best (C) book (D). 2. He is (A) taller (B) than (C) any boy (D) in his class. 3. Which (A) do you like (B) best (C), this one or (D) that one? 4. Mike is (A) very (B) cleverer (C) than (D) Jack. 5. Kate draws (A) best (B) of (C) her class (D).