单选题）

22. He is a boy of average intelligence and therefore ________, he still can't catch up with the top students in his class. A. as he tries much B. as much he tries C. much as he tries D. as much as he tries 23. The player is under good treatment and the ______ are that he will recover from his injury in time for the next game. A. opportunities B. occasions C. chances D. conditions It is a great honour for me ________ to give you a speech on the cross –strait politics. A. having asked B. being asked C. to have asked D. to be asked Human facial expression differ from those of animals in the degree _______ they can be controlled on propose. A. in which B. by which C. at which D. to which —Mary looks down today. What is up? —Well，______ happened between Mary and me is none of your business. A. wherever B. whoever C. whatever D. no matter what 请老师给予详细解答！我有五个小问题 谢谢老师