I don't really work here.I ___ until the new secretary arrives.A.just help out B.have just helped out C.am just helping out D.will just help out標(biāo)準(zhǔn)答案是C。請問為什么？

熱心網(wǎng)友

A.just help out：一般現(xiàn)在時(shí)不合適 B.have just helped out：完成時(shí)不合適，完成時(shí)的時(shí)間狀語不用until 選C.am just helping out： 我“正在”幫忙，“并將”幫到新秘書來到。D.will just help out ：我“現(xiàn)在沒在”幫忙