12.So absorbed__________in her work that she didn't realize I was behind her.
Check your paper carefully to see ________ you have made any mistakes.
It rained a lot during their journey, so they ________ have had a good time.
People ________ with anyone who is always talking about how wonderful he is.
-- Are you happy with this laboratory? -- Not a little. We can’t have ________.
-- Did you pack him some food?-- Yes, ________ he wouldn’t get hungry.