MillieandKittyaregoodfriends,theyoften

問題詳情：

Millie and Kitty are good friends, they often _________ each other _________study.

A、helping; with                             B、help; to

C、helping; to                               D、help; with

【回答】

D

知識點：動詞和動詞短語

題型：選擇題