I smell something _____ in the kitchen. Can I call you back in a minute? [ ]

We had not waited __________ she came.

It seems that Ann doesn’t like the bag you bought for her the other day.— ________ I have been told she is desperate for one of that style.

Whenever a patient needs an injection of Penicillin, the doctor does need to make sure whether his patient is ___ to the medicine.

Everyone in the village is very friendly. It doesn’t matter ___ you have lived there for a short or a long time.