_______ by keeping down costs will Power Data hold its advantage over other companies.

She was told to wear flat shoes ________ her back problem.

1—Mum, could you buy me adress like this –Certainly, we can buy _______ one thanthis, but ________ this.

My host family tried to cook _______ for me when I studied in New Zealand.

How old is your daughter—______. We had a surprise party for her ______ birthday last Saturday.