Bob promises to join in the football match ______ he has to help his parents on the farm. A. if B. as C. unless
Mrs. Green is out. I have to ___________ her baby.
—What ______ things do you want? —Some eggs,please.
— Many girls like ________ sweaters in autumn. —Yes, they are pretty in them.
There is ________ food. It’s enough for us to eat for a week.
My sister is ________ shy when she speaks to others.