There is ______ “s” and ______ “u” in the word “bus”.

My father plans ______ me t o visit the Summer Palace this summer holiday.

There is ___________ “s” and __________ “u” in _______word “student”.

Is this _______notebook?—No, it isn’t_________.

I heard the old man won ______ yuan in the lottery. —Really？What a lucky man!