综合练习语法题练习1. I dont understand _ he should have done something like that.A. whyB. whatC. howD. when 2. Most animals have little connection with animals of a different kind, _ they hunt them for food. A. ifB. whileC. unlessD. as3. Only in this way _ progress in your English.A. you makeB. you can makeC. can you makeD. you be able to make4. For a person with reading habits, a printed page contains not only words _ ideas, thoughts a
