There is a possibility that Mary forgot about the meeting. (COULD) Mary ______________ about the meeting

It wasn't necessary for you to come as early as you did. (NEED)  You _________________ so early.

If you're not sure how to spell the word, consult the dictionary. (UP) You should _____________________ a dictionary if you're not sure how to spell it.

They are designing a new machine. (IS) A new machine __________________________ designed.

His canary sings better than mine (AS) My canary doesn't ______________________ his.

She hasn’t spoken to her brother-in-law for ages. (SPOKE)  It’s _______________to her brother-in-law.

I’m sure it will be raining tomorrow. (BOUND) It ___________________ raining tomorrow.

You should make the most of being in Paris and visit the Eiffel Tower. (ADVANTAGE) You should ________ being in Paris and visit the Eiffel Tower.

I'm sure he knew all the details. (KNOWN) He ________________ all the details.

I met Nigel by chance in the supermarket. (HAPPENED) I ________________________ Nigel in the supermarket.

I last went to Paris two years ago. (NOT) I _________________ Paris for two years.

These vegetables are too hard; they're undercooked. (HAVE) These vegetables ________________________ enough.