根據句子時態,用所給be動詞或其他動詞的時態形式填空

題目：

根據句子時態,用所給be動詞或其他動詞的時態形式填空
last weekend we------------at home(not stay)
---------there any people in the swimming pool just now?(be)
where---------the woman----------lots of vegetables yesterday?(buy)
the weather-----------cold and humid in kunming on may 18th(be)
she----------my pen pal three years ago.(not be)

解答：

didn't stay
were
did buy
was
wasn't