有关the past several years witnessed the phenomenon that ……时态问

有关the past several years witnessed the phenomenon that ……时态问 英语翻译The past several years have witnessed 见证a phenomenon tha The past twenty years witnessed the fast development of the 英语翻译The past twenty years witnessed the fast development of in the past years用什么时态 in the past two years 是什么时态 Our school has changed greatly in the past several years. in the past years he____(write)several novels during the past several years引发的疑问? 英语翻译The past three decades [have] witnessed china's economy 英语翻译The past decades have witnessed an unprecedented explosi over the past fews years与什么时态连用?