He studies hard ----A in Biology A.get B.gets C.to get D.getting
问题描述:
He studies hard ----A in Biology A.get B.gets C.to get D.getting
答
He studies hard (C.to get) A in Biology.
他努力学习,为了生物能获取A等.
这一空要填不定式to do,来表示目的.