_____ when the light went on last night?

What’s wrong with you , Eric ? You look tired .–I ______ to prepare for the final exam last night .

Do you know if he________ to play football with us? —I think he will come if he _________ free tomorrow.

Miss Lin____________ a lot of work for the poor area since 2010.

___________ has always been expected, he has finally achieved his dream, ________ makes his parents so proud.