每空一词他们今天下午4点到达北京.They ______ ______ arrive in Beijing at 4 o'clock this afternoon.
热心网友
are to be to 表示预计/安排之中的事情
热心网友
They __are__ __to__ arrive in Beijing at 4 o'clock this afternoon.
热心网友
are to
每空一词他们今天下午4点到达北京.They ______ ______ arrive in Beijing at 4 o'clock this afternoon.
are to be to 表示预计/安排之中的事情
They __are__ __to__ arrive in Beijing at 4 o'clock this afternoon.
are to