【题目】I'd appreciate _______if you could come and help me once more and I always appreciate _______me with my English in the past.
A.this; you to help
B.that; your helping
C.it; you to help
D.it; your helping

【答案】D
【解析】考查固定用法。appreciate后跟接if或when从句时，其后不直接跟if或when引导的从句，若语义上需要接这类从句，需借助it。其后可接名 (代)词、动名词、名词性从句等作宾语。故选D。